Fields
Modified True/False
Indicate whether the sentence or statement is true or false. If false, change the identified word or phrase to make the
sentence or statement true.
____
1. The equation Fg = mg is valid everywhere. ______________________________
____
2. The equation
____
3. The force of gravity keeps the Moon in orbit around Earth. _________________________
____
4. The cube of the average radius is directly proportional to the square root of the period of a planet’s orbit.
_________________________
____
5. The cube of the average radius is inversely proportional to the square of the period of a planet’s orbit.
_________________________
____
6. As the altitude of a satellite increases, the time to complete one orbit also increases.
_________________________
____
7. As the altitude of a satellite increases, the speed of the satellite increases. _________________________
____
8. The general equation of gravitational potential energy,
is only valid far from Earth’s surface. _________________________
, is not valid near Earth’s surface.
_________________________
____
9. The binding energy of a rocket on a launch pad is the same as the escape energy for the rocket.
_________________________
____ 10. Near the surface of Earth, the calculation of the change in gravitational potential energy using the two
equations
and
will be different for a vertical change in height of 250
m. _________________________
____ 11. The binding energy is always equal to the absolute value of the total energy (i.e.,
_________________________
).
____ 12. Earth’s gravitational force is exerted everywhere, so it would be impossible for a space probe launched from
Earth to escape from it. _________________________
____ 13. Eg can never have a positive value. _________________________
____ 14. The mass of a satellite must be known to calculate its orbital speed. _________________________
____ 15. If electrons are removed from an object, it will be charged negatively. _________________________
____ 16. If electrons are added to an object, it will be charged negatively. _________________________
____ 17. A negatively charged ebonite rod is brought near a neutral, metallic-coated pith ball. Some of the electrons are
repelled by the ebonite rod and move to the far side of the pith ball. This process is called charging by
induction. ___________________________________
____ 18. If a negatively charged ebonite rod is brought close to the knob of a neutral electroscope and you touch the
electroscope, some electrons will leave the electroscope and travel through your hand to your body. When
you remove your hand the charge on the electroscope will be positive. _________________________
____ 19. Coulomb’s law is extremely accurate under the conditions that the spheres are small and that the spheres are
also small compared to the distance between them. ______________________________
____ 20. Coulomb’s law states that the electric force is directly proportion to the product of the charges on each sphere
and inversely proportional to the distance between the charges.
________________________________________
____ 21. When the distance between two charged spheres is decreased by a factor of 2, then the electric force
decreases by a factor of 2. ______________________________
____ 22. When the charge on both spheres is doubled, the electric force is increased by a factor of four.
_________________________
____ 23. One of the ways in which Newton’s law of universal gravitation differs from Coulomb’s law is that
gravitational force can only attract, whereas the electric force can only repel.
________________________________________
____ 24. A small negative charge is used to determine the direction of the electric field lines around a charge.
_________________________
____ 25. In an electric field diagram representing multiple charges, the density of field lines in the area around a charge
does not always indicate the relative strength of the electric field. _________________________
____ 26. A positive test charge is placed in the space between two large, equally charged parallel flat plates with
opposite charges. The electric force on the positive test charge would be greatest near the negative plate.
_______________________________________________________
____ 27. The force vectors on a positively charged sphere are away from the sphere. _________________________
____ 28. By convention, in electrostatic representations, electric fields start on negative charges and end on positive
charges. _____________________________________________
____ 29. If q1 and q2 are opposite charges, they attract and the electric potential is a negative value, as in the case of
gravitational potential energy. _________________________
____ 30. The unit of electric potential is joules per volt. _________________________
____ 31. The diagram below represents the electric potential near a negative charge. The electric potential is large near
the charge and decreases, approaching zero, as r increases. _________________________
____ 32. According to the diagram below, for a negative charge, the electric potential is a large negative value near the
charge and increases, approaching zero, as r increases. _________________________
____ 33. If a charge moves half of the distance between two parallel plates, the charge will experience a potential
difference of
. _________________________
____ 34. If a charge moves one-quarter of the distance between two parallel plates, the charge will experience a
potential difference of
. _________________________
____ 35. When the net force on an oil drop in a Millikan apparatus is zero, the gravity downward cancels the product
of the mass and the electric field on the oil drop.
__________________________________________________
____ 36. The elementary charge e, to four significant digits, is 1.602  1023 C. _________________________
____ 37. Heavy subatomic particles are composed of fundamental entities called quarks.
_________________________
____ 38. Each subatomic particle has a charge that is quantized. That is to say, charges come in discrete units of e.
_________________________
____ 39. For a charge q1 moving in the electric field of q2 in a vacuum, the loss of electric potential energy is equal to
the gain in kinetic energy. _________________________
____ 40. Situation A: a uniform electric field is in air and gravity is a factor
Situation B: a uniform electric field is in a vacuum where gravity is negligible
A charged particle dropping between the two parallel plates in situation B would travel at a constant
acceleration, as opposed to situation A in which the acceleration of the charged particle would decrease as
the charged particle dropped due to air resistance. _________________________
____ 41. In an inkjet printer, the ink droplets acquire an electric charge by induction. _________________________
____ 42. The relative strength of the magnetic field is indicated by the spacing of adjacent field lines. The farther apart
the lines, the stronger the magnetic field. ______________________________
____ 43. The magnitude of a magnetic field is determined by the magnitude of the turning action on a small test
compass aligned with the direction of the magnetic field. _________________________
____ 44. The north pole of a compass points toward the true north. _________________________
____ 45. Inclination and declination charts are constantly revised because the magnetic field rotates about Earth’s axis.
_________________________
____ 46. Some ferromagnetic materials are aluminum, nickel, calcium, and gadolinium.
______________________________
____ 47. In a loop of wire with a current, the field lines inside the loop are closer together, indicating a stronger
magnetic field than on the outside of the loop. _____________________________________________
____ 48. A high permeability of a material means that the magnetic field will be high when using that material.
_________________________
____ 49. When a material has a permeability close to 1, it means that the magnitude of the magnetic field will be close
to that of a vacuum. _________________________
____ 50. The magnitude of the magnetic force on a charged particle is directly proportional to the magnitude of the
magnetic field and the speed and charge of the particle. _________________________
____ 51. When the magnetic force is at an angle other than 90° to the velocity of a charged particle, the force acts as a
deflecting one. It changes the direction of the velocity, not its magnitude. _________________________
____ 52. In two-dimensional diagrams of magnetic fields Xs are drawn to represent field lines pointing out of and
perpendicular to the page. _________________________
____ 53. In two-dimensional diagrams of magnetic fields dots are drawn to represent field lines pointing out of and
perpendicular to the page. ______________________________
____ 54. The motion of a charged particle does not influence the direction of gravitational or electric forces.
_________________________
____ 55. When a conductor is placed in a magnetic field, the force on the conductor is inversely proportional to the
current in the conductor. _________________________
____ 56. When a conductor is placed in a magnetic field, the force on the conductor is directly proportional to the
length of the conductor. _________________________
____ 57. The formula relating magnetic force to the magnetic field, conductor length, current and angle between the
conductor and the magnetic field lines is
. _________________________
____ 58. When a conductor is placed in a magnetic field, the force on the conductor is directly proportional to the
magnitude of the magnetic field. _________________________
____ 59. The magnetic field around a straight conductor consists of field lines that are concentric circles. The circles
become more widely spaced as the distance from the conductor decreases. _________________________
____ 60. Measurements of the magnetic field strength show that
____ 61. Measurements of the magnetic field strength have shown that
____ 62. The value of
. _________________________
.
. _________________________
____ 63. The SI definition of the ampere is a magnetic one and depends on an understanding of the force between two
perpendicular current-carrying conductors. _________________________
____ 64. When the current is constant in the primary coil of an induction apparatus, then a current is induced in the
secondary coil. _________________________
____ 65. A larger current is produced when a magnet is plunged into a solenoid by increasing the number of turns in
the coil. _________________________
____ 66. A larger current is produced when a magnet is plunged into a solenoid by using a stronger magnet.
_________________________
Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
____ 67. The force of gravity between two 4.0-kg objects that are 10.0 cm apart is
a. 1.1  10–11 N
d. 2.7  10–11 N
b. 1.1  10–7 N
e. 2.7  10–8 N
–8
c. 1.1  10 N
____ 68. How far above the surface of Earth do you need to go for g to be reduced to 0.5 of its value on the surface of
Earth?
a. 0.41rE
d. 1.4rE
b. 0.50rE
e. 2.0rE
c. 0.71rE
____ 69. How far from the centre of Earth do you need to go for g to be reduced to 0.5 of its value on the surface of
Earth?
a. 0.41rE
d. 1.4rE
b. 0.50rE
e. 2.0rE
c. 0.71rE
____ 70. A planet has twice Earth’s radius and twice Earth’s mass. The value of g on this planet would be
a. 0.25g
d. 2g
b. 0.5g
e. 4g
c. 6g
____ 71. The value of g on Saturn is 10.9 N/kg. The weight of a 2.5-kg mass on Saturn is
a. 2.5 kg
d. 4.4 kg
b. 4.4 N
e. 27 N
c. 11 N
____ 72. Earth’s mass is 5.98  1024 kg. Calculate the value of g at a point 4.8  105 km from the centre of Earth.
a. 9.8  10–2 N/kg
d. 1.7  103 N/kg
5
b. 8.3  10 N/kg
e. 9.8  10–5 N/kg
–3
c. 1.7  10 N/kg
____ 73. A 722-kg satellite is in circular orbit 7380 km above the surface of Earth (ME = 5.98  1024 kg). The
gravitational force acting on the satellite is
a. 1.52  103 N
d. 7.33 N
b. 5.29  109 N
e. 7.08  103 N
c. 5.29  103 N
____ 74. The mass of Neptune is 1.03  1026 kg. If g = 13.80 N/kg on the surface of Neptune, the radius of Neptune is
a. 5.38  106 m
d. 2.65  107 m
6
b. 6.38  10 m
e. not enough information
7
c. 2.23  10 m
____ 75. The radius of Mercury is 2.57  106 m. If g = 3.52 N/kg on the surface of Mercury, the mass of Mercury is
a. 3.49  1023 t
d. 3.49  1022 kg
23
b. 9.70  10 t
e. none of the above
23
c. 9.70  10 kg
____ 76. The Sun has a mass of 1.99  1030 kg. Jupiter has a mass of 1.90  1027 kg and a mean radius of orbit around
the Sun of 7.78  108 km. The speed that Jupiter travels in its orbit around the Sun is
____ 77.
____ 78.
____ 79.
____ 80.
____ 81.
____ 82.
____ 83.
____ 84.
a. 1.31  104 km/s
d. 4.04  102 m/s
b. 4.70  104 km/h
e. 1.28  104 m/s
5
c. 4.13  10 m/s
The Kepler’s third-law constant of proportionality for the Sun, CS, is 3.4  1018 m3/s2. If Earth’s radius of
orbit is doubled, then CS would become
a. 4.2  1017 m3/s2
d. 1.4  1019 m3/s2
b. 8.5  1017 m3/s2
e. 2.7  1019 m3/s2
18
3
2
c. 3.4  10 m /s
Kepler’s constant for the Sun is CS = 3.4  1018 m3/s2. The average period of orbit for Earth is 365.26 d. The
average radius of Earth’s orbit is
a. 7.7  107 km
d. 1.5  1011 m
9
b. 3.4  10 m
e. 5.8  1016 m
10
c. 1.8  10 m
The average radius of orbit for Jupiter is 7.78  1011 m. Using CS = 3.355  1018 m3/s2, the period of orbit for
Jupiter is
a. 4.25  102 s
d. 4.25  1012 s
8
b. 3.75  10 s
e. 1.80  105 s
c. 1.43  1021 s
If the average radius of orbit for a satellite is doubled, the period will increase by a factor of
a. 0.35
d. 2.0
b. 0.50
e. 2.8
c. 1.0
If the period of orbit for a satellite increases by a factor of 2, the average radius of orbit will increase by a
factor of
a. 0.50
d. 1.6
b. 0.63
e. 2.0
c. 1.0
A planet being orbited by a satellite collapses to half its original radius while maintaining the same mass. The
period of orbit will increase by a factor of
a. 0.35
d. 2.0
b. 0.50
e. 2.8
c. 1.0
If the mass of Earth is 5.98  1024 kg and the radius is 6.38  106 m, the gravitational potential energy of a 2.2
 103-kg vehicle located on the surface of Earth is
a. –1.4  104 J
d. –2.2  1012 J
b. –2.2  104 J
e. 0 J
c. –1.4  1011 J
If the mass of Earth is 5.98  1024 kg and the radius is 6.38  106 m, the gravitational potential energy of a 1.2
 103-kg satellite located in an orbit 230 km above the surface of Earth is
a. –1.1  104 J
d. –9.0  1012 J
10
b. –7.2  10 J
e. –2.1  1015 J
c. –2.1  1012 J
____ 85. Looking at the diagram above, in which part of the orbit is the planet moving the fastest?
a. A
d. D
b. B
e. none of the above
c. C
____ 86. Looking at the diagram above, in which part of the orbit is the planet moving the slowest?
a. A
d. D
b. B
e. none of the above
c. C
____ 87. Looking at the diagram above, which part of the orbit corresponds to the aphelion?
a. A
d. D
b. B
e. none of the above
c. C
____ 88. Looking at the diagram above, in which part of the orbit does the planet have maximum kinetic energy?
a. A
d. D
b. B
e. none of the above
c. C
____ 89. Looking at the diagram below, in which part of the orbit does the planet have zero kinetic energy?
a. A
d. D
b. B
e. none of the above
c. C
____ 90. Looking at the diagram above, in which part of the orbit does the planet have minimum kinetic energy?
a. A
d. D
b. B
e. none of the above
c. C
____ 91. Looking at the diagram below, which part of the orbit corresponds to the perihelion?
a. A
d. D
b. B
e. none of the above
c. C
____ 92. If an orbiting satellite has a total energy of –1.4  1012 J, then the binding energy is
a. –1.4  1012 J
d. –7.0  1011 J
12
b. +1.4  10 J
e. not enough information
c. –2.8  1012 J
____ 93. The total energy of a 257-kg satellite in orbit at an altitude of 5.9  106 m above Earth’s surface (rE = 6.38 
106 m, ME = 5.98  1024 kg) is
a. –4.2  109 J
d. –2.7  1010 J
b. –1.2  1010 J
e. –5.4  1010 J
10
c. –1.6  10 J
____ 94. The binding energy of a 257-kg satellite in orbit at an altitude of 5.9  106 m above Earth’s surface (rE = 6.38
 106 m, ME = 5.98  1024 kg) is
a. 4.2  109 J
d. 2.7  1010 J
10
b. 1.2  10 J
e. 5.4  1010 J
c. 1.6  1010 J
____ 95. The speed of a satellite in orbit 7.4  106 m from the centre of Earth is
a. 2.0  103 km/h
d. 5.4  107 km/h
3
b. 7.3  10 km/h
e. dependent on the mass of the satellite
4
c. 2.6  10 km/h
____ 96. A satellite of mass m is in orbit around a planet of mass M at an altitude a above the planet’s surface. The
radius of the planet is r. The speed of the satellite is
a.
d.
b.
e.
c.
____ 97. A satellite of mass m is in orbit around a planet of mass M at an altitude a above the planet’s surface. The
radius of the planet is r. The total energy of the satellite is
a.
d.
b.
e.
c.
____ 98. A satellite of mass m is in orbit around a planet of mass M at an altitude a above the planet’s surface. The
radius of the planet is r. The kinetic energy of the satellite is
a.
d.
b.
e.
c.
____ 99. The altitude of a geosynchronous satellite is
a. 6.4  106 m
d. 3.6  107 m
6
b. 4.2  10 km
e. 4.2  107 m
6
c. 3.6  10 m
____ 100. A negatively charged rod is held near, but does not touch the knob of an electroscope. The leaves of the
electroscope move apart from one another. A wire is connected to the knob and to a water tap with the
negatively charged rod staying in the same position. Which of the following would occur?
a. Electrons flow from the earth through the wire to the electroscope.
b. No electron flow takes place.
____ 101.
____ 102.
____ 103.
____ 104.
____ 105.
____ 106.
____ 107.
____ 108.
c. The leaves of the electroscope remain still.
d. The leaves of the electroscope move closer together.
e. Electrons flow from the electroscope through the wire to the earth.
A piece of paper becomes electrically charged when a charged rod of plastic is placed close to it. This is
referred to as
a. charging by a conductor
d. charging by contact
b. charging by induction
e. charging by electricity
c. charging by an insulator
To charge an electroscope positively by induction you need
a. a negatively charged rod
d. two objects with opposite charges
b. two objects of the same charge
e. a positively charged rod and a ground
c. a negatively charged rod and a ground
To charge an electroscope negatively by induction you need
a. a negatively charged rod
d. two objects of opposite charges
b. two objects of the same charge
e. a positively charged rod and a ground
c. a negatively charged rod and a ground
A positively charged rod is brought close to a neutral pith ball hanging by a thread. The pith ball
a. becomes negatively charged
b. is repelled by the rod and the attracted to the rod
c. becomes positively charged
d. is attracted to the rod and then repelled by the rod
e. remains hanging by a thread motionless and unaffected by the rod
When a charge separation has been induced on an object, the charge on the object
a. is opposite to the charge on the charging object
b. is proportional to the size of the object being charged
c. is permanent
d. is the same as the charge on the charging object
e. is inversely proportional to the size of the object being charged
The leaves of a neutral electroscope separate when a positively charged rod is brought close to, but not
touching the knob of the electroscope because
a. the leaves are positive and the knob is neutral
b. electrons are attracted to the knob causing both leaves to be positive and thus repel one
another
c. the leaves are negative and the knob is neutral
d. electrons are repelled from the knob, causing both leaves to be negative and thus repel one
another
e. one leaf is positive, one leaf is negative, and the knob is neutral
The law of electric charges states that opposite charges
a. attract each other, similar charges attract neutral objects, and charged objects repel one
another
b. repel each other, similar charges attract neutral objects, and charged objects attract one
another
c. attract neutral objects, similar charges repel each other, and charged objects attract one
another
d. attract each other, similar charges repel one another, and charged objects attract some
neutral objects
e. attract neutral objects, similar charges attract each other, and charged objects repel one
another
The Bohr–Rutherford model of the atom explains electrification in the following way:
____ 109.
____ 110.
____ 111.
____ 112.
____ 113.
____ 114.
____ 115.
a. Protons are negatively charged subatomic particles that are free to move from atom to
atom and, therefore, cause an excess or deficit of electrons.
b. Protons are positively charged subatomic particles that are free to move from atom to atom
and, therefore, cause an excess or deficit of protons.
c. Electrons are negatively charged subatomic particles that are free to move from atom to
atom and, therefore, cause an excess or deficit of electrons.
d. Electrons are positively charged subatomic particles that are free to move from atom to
atom and, therefore, cause an excess or deficit of electrons.
e. Neutrons are negatively charged subatomic particles that are free to move from atom to
atom and, therefore, cause an excess or deficit of electrons.
Solids in which electrons are able to move easily from one atom to another are
a. conductors
d. neutral
b. electrically charged
e. capacitors
c. insulators
When a negatively charged object makes contact with a neutral object, the negative charge is shared between
the two objects, and the objects both become negatively charged. This is an example of
a. charging by friction
d. Coulomb’s law
b. charging by contact
e. charging by induction
c. induced charge separation
When a rubber rod is rubbed with cat’s fur
a. the rubber rod is positively charged
b. both the rubber rod and the cat’s fur possess a positive charge
c. both the rubber rod and the cat’s fur possess a negative charge
d. a number of protons leave the cat’s fur
e. the rubber rod and the cat’s fur contain equal but opposite charges
When an acetate rod is rubbed with human hair, the acetate rod
a. and the human hair are neutral
b. and the human hair are positively charged
c. and the human hair are negatively charged
d. is positively charged and the human hair is negatively charged
e. is negatively charged and the human hair is positively charged
Which subatomic particles are electrically charged?
a. neutrons only
d. electrons and neutrons
b. electrons and protons
e. protons only
c. protons and neutrons
A plastic rod is rubbed with silk. Both the plastic rod and the silk become charged. The charge on the silk is
due to a shortage of
a. electrons
d. ions
b. protons
e. positrons
c. neutrons
Which of the following materials when rubbed against an aluminium zinc rod would cause the greatest
negative charge?
a. cat’s fur
d. cotton
b. silk
e. human hair
c. wool
____ 116. Two charged spheres are 5.00 cm apart. One sphere has a charge of
charge of
a. 1.44  101 N
. Assuming k =
and the other sphere has a
, the electric force between the two spheres is
d. 2.88  10–4 N
b. 4.44  10–20 N
c. 2.25  1019 N
e. 4.44  10–18 N
____ 117. The electrostatic force between two point charges is
. If the distance between the charges is tripled
but the size of the charges remains the same, the force between them will be
a.
d.
N
N
b.
e.
N
N
c.
N
____ 118. Two charged spheres are 15.00 cm apart. One sphere has a charge of
charge of
a.
b.
c.
. Assuming k =
N
N
and the other sphere has a
, the electric force between the two spheres is
d.
e.
N
N
N
____ 119. The electrostatic force between two point charges is
. If the distance between them is doubled and
the size of the charge remains the same, the force between them will be
a.
d.
N
N
b.
e.
N
N
c.
N
____ 120. The electrostatic force between two point charges is
. If the distance between the charges is
doubled and the charge on one of them triples, the force between them will be
a.
d.
N
N
b.
e.
N
N
c.
N
____ 121. The electrostatic force between two point charges is
. If the distance between the charges is tripled
while the charge on one of them triples and the charge on the other doubles, the force between them will be
a.
d.
N
N
b.
e.
N
N
c.
N
____ 122. The electrostatic force between two point charges is
. If the distance between the charges is
doubled while the charge on one of them is doubled and the charge on the other is halved, the force between
them will be
a.
d.
N
N
b.
e.
N
N
c.
N
____ 123. Which of the following is NOT a similarity or difference between Coulomb’s law and Newton’s law of
universal gravitation?
a. The forces act along the line joining the centres of the masses or charges.
b. The electric force can attract or repel, depending on the charges involved, whereas the
gravitational force can only attract.
c. The universal constant G is very small and in many cases the gravitational force can be
ignored. Coulomb’s constant k is very large, so that even small charges can result in
noticeable forces.
d. Coulomb’s law is the product of two masses, whereas Newton’s law of universal
gravitation is the product of two charges.
e. The size of the force is the same as the force that would be measured if all the mass or
charge is concentrated at a point at the centre of the sphere.
____ 124. Four charged spheres, A, D, P, and T are arranged as shown below. Sphere A has a charge of
sphere D has a charge of
C, sphere P has a charge of
C,
C, and sphere T has a charge of
C. Which two spheres exert the smallest force on each other?
a. A and D
d. P and D
b. A and T
e. P and T
c. A and P
____ 125. Four charged spheres, A, D, P, and T are arranged as shown below. Sphere A has a charge of
sphere D has a charge of
C, sphere P has a charge of
C,
C, and sphere T has a charge of
C. Which two spheres exert the smallest force on each other?
a. A and D
d. P and D
b. A and T
e. P and T
c. A and P
____ 126. Two isolated spheres, A and B, are 2 m apart. Sphere A has charge q and sphere B has charge 2q. The
electrostatic force on sphere A is
a. the same as on sphere B
d. four times that on sphere B
b. two times that on sphere B
e. not enough information
c. half that on sphere B
____ 127. Which of the following diagrams represents the field of force around a negative point charge?
a.
d.
b.
e.
c.
____ 128. Which of the following diagrams best illustrates the electric field in the area around two identical charges?
a.
d.
b.
e.
c.
____ 129. The diagram below shows two point charges, B and C, and the electric field lines in the region around them.
Which one of the following statements is true?
a. A negative point charge placed at point A will move toward the left.
b. The charges on both B and C are negative.
c. The charges on both B and C are positive.
d. The electric field is strongest nearest point B.
e. A negative point charge placed at point A will move toward the right.
____ 130. Which of the following diagrams most accurately depicts the field between two oppositely charged plates?
a.
d.
b.
c.
e.
____ 131. An object with charge +q experiences an electric force FE when put in a particular location in the electric field
. The positive charge +q is removed and an object with charge –2q is placed in the same location in the
electric field. This charge would feel an electric force of
a. –2FE
d. –4FE
b.
e.
c.
____ 132. An object with charge +q experiences an electric force FE when put in a particular location in the electric field
. The positive charge +q is removed and an object with charge –4q is placed in the same location in the
electric field. This charge would feel an electric force of
a. –2FE
d. –4FE
b.
e.
c.
____ 133. The electric field 0.50 m from a small sphere with a positive charge of 7.2  10–5 C is
a. 2.6  106 N/C [inward]
d. 2.9  10–4 N/C [inward]
–4
b. 2.9  10 N/C [outward]
e. 2.6  106 N/C [outward]
6
c. 1.3  10 N/C [outward]
____ 134. The electric field 0.50 m from a small sphere with a negative charge of 2.4  10–8 C is
a. 8.6  102 N/C [inward]
d. 4.3  102 N/C [inward]
2
b. 4.3  10 N/C [outward]
e. 7.8  1012 N/C [outward]
–8
c. 9.6  10 N/C [outward]
____ 135. The magnitude of the electric field between the plates of a parallel plate capacitor is 4.7  104 N/C. If the
charge on each plate were to increase by a factor of three, the magnitude of the electric field would
a. increase by a factor of nine
d. decrease by a factor of three
b. increase by a factor of three
e. not be affected
c. decrease by a factor of nine
____ 136. The magnitude of the electric field between the plates of a parallel plate capacitor is 3.5  104 N/C. If the
charge on each plate were to decrease by a factor of four, the magnitude of the electric field would
a. increase by a factor of four
d. decrease by a factor of four
b. increase by a factor of sixteen
e. not be affected
c. decrease by a factor of sixteen
____ 137. If point charge +q was absent, the electric field at point B would be E. What is the electric field between the
two point charges, +q and –q, at point B which lies at the midpoint between the two charges?
a. 2E [right]
d.
b. 0
e.
c. 2E [left]
[left]
[right]
____ 138. If point charge –q was absent, the electric field at point B would be E. What is the electric field between the
two point charges,–q and –q, at point B which lies at the midpoint between the two charges?
____ 139.
____ 140.
____ 141.
____ 142.
____ 143.
____ 144.
a. 2E [right]
d.
b. 0
e.
[left]
[right]
c. 2E [left]
The magnitude of the electric field between the plates of a parallel plate capacitor is 4.7  104 N/C. If the
plates were separated to a distance that is twice their original separation distance, the magnitude of the electric
field would
a. double
d. decrease by a factor of sixteen
b. be halved
e. not be affected
c. decrease by a factor of four
The magnitude of the electric field between the plates of a parallel plate capacitor is 4.7  104 N/C. If the
plates were separated to a distance one-third their original separation distance, the magnitude of the electric
field would
a. decrease by a factor of one-third
d. increase by a factor of three
b. increase by a factor of one-ninth
e. not be affected
c. decrease by a factor of three
The sign of the electric potential difference depends on
a. the sign of the charge
b. the magnitudes of the distances from the charge
c. the magnitude of the electric potential of the positive plate
d. the magnitude of the electric potential of the negative plate and the distance between the
plates
e. the magnitude of the distance from the charge and the sign of the charge
Two 2.0-kg spheres each carry a charge of 2.0 C. How does FE compare with Fg?
a. FE = Fg
b. Fg > FE
c. FE > Fg
d. If the charges on the spheres are the same, then Fg > FE, but if the charges are opposite
then FE > Fg.
e. FE and Fg cannot be compared without knowing the distance between the spheres..
A 2.4  10–3-C positive test charge is placed between two plates. The potential difference between two
parallel metal plates is 30 V. Plate A is positive and plate B is negative. Which plate has a higher electric
potential?
a. plate A
b. plate B
c. Plates A and B have the same potential.
d. If the positive charge is placed closer to the positive plate, then plate A will have a greater
electric potential.
e. If the positive charge is placed closer to the negative plate, then plate B will have a greater
electric potential.
How much work must be done to carry a –4.0 C charge from negative plate A to positive plate B if the
electric potential difference between the plates is 35 V?
____ 145.
____ 146.
____ 147.
____ 148.
____ 149.
____ 150.
____ 151.
____ 152.
____ 153.
a. 8.8 J
d. 140 J
b. –140 J
e. –0.11 J
c. –8.8 J
If two parallel plates are separated by a distance of 5.0 cm and the electric potential between the plates is 20.0
V, the magnitude of would be
a. 10.0 V·m
d. 400.0 V/m
b. 0.050 m/V
e. 0.25 m/V
c. 4.0 V/m
How much work is done to move an electron with a charge of –1.6  10–19 C from the positive terminal of a
1.5-V battery to the negative terminal?
a. 2.4  10–19 J
b. 9.4  10–18 J
c. 1.0  10–19 J
d. 9.6  10–10 J
e. unable to determine without the distance between the plates
The electric field intensity between two parallel plates is 300.0 N/C. The plates are connected to a battery
with an electric potential difference of 12.0 V. The separation of the plates is
a. 25.0 m
d. 4.0  10–7 m
b. 3600.0 m
e. 0.040 m
c. 2.3  1011 m
If two parallel plates are 15 cm apart and have a field intensity of 1.2  102 N/C, the potential difference
between the plates would be
a. 18 V
d. 1800 V
b. 1.3  10–1 V
e. 7.2  1012 V
c. 2.2  105 V
The charge on a small sphere with an excess of 2.4  1012 electrons is
a. 1.5  1031 C
d. 3.8  1031 C
–7
b. 3.8  10 C
e. 1.5  10–7 C
c. 2.2  1022 C
How many electrons are present on a small sphere that has a charge of 7.4  10–4 C?
a. 2.1  10–16
d. 6.7  106 C
22
b. 1.2  10 C
e. 4.6  1015
c. 1.2  10–22 C
The number of electrons that must be removed from a sphere to give it a charge of 9.2  10–5 C is
a. 1.7  1015
d. 8.3  105
13
b. 9.8  10
e. 1.7  10–15
c. 5.8  1014
A small object has an excess of 4.7  1011 electrons. The electric potential at a distance of 0.200 m from the
object would be
a. 2.7  106 V
d. 3.4  103 N/C
b. 3.4  103 V
e. 2.6  106 N/C
22
c. 2.1  10 V
The charge, in coulombs, required to suspend a 1.7  10–13-kg oil drop in an electric field with intensity 2.5 
105 N/C is
a. 6.8  10–24 C
d. 6.7  10–18 C
b. 4.3  10–13 C
e. 1.1  10–45 C
–14
c. 6.1  10 C
____ 154. A sphere of charge +q is in a fixed position. A smaller sphere +q is placed near the larger sphere and released
from rest. Which one of the following best describes its motion?
a. decreasing velocity and increasing acceleration
b. decreasing velocity and constant acceleration
c. increasing velocity and decreasing acceleration
d. increasing velocity and increasing acceleration
e. decreasing velocity and decreasing acceleration
____ 155. Three spheres are equal distances apart as shown below. Spheres X and Y are held in fixed positions but
sphere Z is free to move. Which path will sphere Z follow?
a. A
d. D
b. B
e. E
c. C
____ 156. A charge +q enters the area between two oppositely-charged plates through a hole in the positive plate. The
charge +q accelerates from rest and reaches the negative plate with a speed v. If a charge of +2q having four
times the mass entered the area through the hole and accelerated from rest, what would its speed be at the
negative plate?
a. 2v
d. 0.707v
b.
e.
c. 1.41v
____ 157. The potential difference between two parallel plates is 1.7  104 V. To move a small charge from one plate to
another opposing the electric field requires 0.56 J of work. The magnitude of the charge is
a. 3.0  104 C
d. 3.3  10–5 C
3
b. 9.5  10 C
e. 4.8  10–15 C
c. 1.5  10–15 C
____ 158. Which of the following statements about determining the magnetic field around a straight conductor is NOT
correct?
a. The thumb of your right hand that points is pointing in the direction of the current.
b. A compass may be used when it is orientated perpendicular to the conductor.
c. Grasp the conductor with your right hand.
d. Curl the fingers of your right hand in the direction of the magnetic field lines.
e. A compass may be used when it is orientated parallel to the conductor.
____ 159. Which of the following statements about the loop shown below is false? (The loop is horizontally oriented.)
a. The north pole of the loop is at the bottom of the loop labelled Z.
b. The direction of the magnetic field cannot be determined.
c. The magnetic field goes up through the loop.
d. The magnetic field is strongest in the inside of the loop.
e. The south pole of the loop is labelled X.
____ 160. Which of the following statements for a solenoid is NOT true?
a. To determine the magnetic field you grasp the coil in your right hand.
b. A solenoid consists of a coiled conductor.
c. Your right-hand thumb must be pointed in the direction of the south pole.
d. The fingers of your right hand are curled in the direction of the electric current.
e. The right hand rule for a solenoid is consistent with the right hand rule for a straight
conductor.
____ 161. Which of the following does NOT increase the strength of the magnetic field of a solenoid?
a. triple the current
b. double the number of loops
c. double the core’s relative magnetic permeability
d. use a paramagnetic material in the core instead of cobalt or nickel
e. use soft iron for the core material instead of air
____ 162. Which one of the following substances has the highest relative magnetic permeability?
a. air
d. aluminum
b. steel
e. water
c. copper
____ 163. The direction of a magnetic field is from right to left as shown below. A proton travels into and
perpendicular to the plane of the page.
The direction of the magnetic force acting on the proton is
a. down
b. up
c. right
d. left
e. directly out of the page and perpendicular to the paper
____ 164. In his experiment, J.J. Thomson demonstrated that cathode rays are deflected by a magnetic field. From this,
we know that cathode rays
a. contain potential energy
d. carry a charge
b. travel in straight lines
e. are affected by the force of gravity
c. travel at the speed of light
____ 165. In his experiment, J.J. Thomson demonstrated that cathode rays are deflected by an electric field. From this,
we know that cathode rays
a. possess potential energy
d. are affected by the force of gravity
b. travel at the speed of light
e. carry a charge
c. travel in straight lines
____ 166. A magnetic force causes a positively charged particle q to undergo uniform circular motion in a uniform
magnetic field B. The radius of the circular motion is r. The magnitude of the positively charged particle’s
velocity can be described by which of the following?
a.
d.
b.
e.
c.
____ 167.
FM
The direction of the positively charged particle’s velocity according to the diagram above must be
a. to the left
b. to the right
c. upward
d. out of the page, perpendicular to the page
e. into the page, perpendicular to the page
____ 168. Which of the following statements are true about a magnetic force and field?
I. A charged particle may travel through a magnetic field without experiencing a magnetic force.
II. The magnetic field of a current-carrying conductor points toward the conductor.
III. If you increase the magnetic field, then you increase the kinetic energy of the charged particle travelling
through the magnetic field.
a. I only
d. II and III only
b. I and II only
e. III only
c. I and III
____ 169. Given that in the diagram below, B is the magnetic field and v is the speed of the positive particle, what is the
direction of the magnetic force?
a. right
d. into the page
____ 170.
____ 171.
____ 172.
____ 173.
____ 174.
____ 175.
____ 176.
____ 177.
____ 178.
b. out of the page
e. downward
c. left
A positively charged particle of mass 3.0  10–12 kg and charge +6.4  10–5 C is perpendicular to a 1.5-T
magnetic field. If the particle has a speed of 4.8  103 m/s, the acceleration of this particle is
a. 3.4  10–4 m/s2
d. 1.5  10–4 m/s2
–20
2
b. 2.6  10 m/s
e. 1.7  1019 m/s2
c. 1.5  1011 m/s2
Magnetic field strength is measured in
a. N
d. kg·m/s2
b. N·C
e. kg·m2/s2
c. kg/C·s
A proton of charge 1.6  10–19 C is moving east with a speed of 8.2  107 m/s, as it enters a magnetic field of
2.5 T directed downward. The magnitude and direction of the magnetic force acting on the proton is
a. 3.3  10–11 N [N]
d. 3.3  10–11 N [S]
b. 1.9  1011 N [S]
e. 1.9  1011 N [N]
–12
c. 5.3  10 N [S]
A electron of charge –1.6  10–19 C is moving east with a speed of 8.2  105 m/s, as it enters a magnetic field
of 1.5 T directed downward. The magnitude and direction of the magnetic force acting on the proton is
a. 8.7  10–14 N [S]
d. 2.0  10–13 N [S]
–25
b. 2.9  10 N [N]
e. 2.9  10–25 N [S]
–13
c. 2.0  10 N [N]
A 5.0-cm straight conductor carries a current of 12 A through a uniform 0.85-T magnetic field. When the
angle between the current and the magnetic field is 25°, the magnitude of the force on the conductor is
a. 120 N
d. 0.86 N
b. 0.22 N
e. 22 N
c. 86 N
A 50.0-cm straight conductor carries a current of 10.0 A through a uniform 0.55-T magnetic field. When the
angle between the current and the magnetic field is 80.0°, the magnitude of the force on the conductor is
a. 270 N
d. 2.7 N
b. 280 N
e. 2.8 N
c. 11 N
A 50.0-cm straight conductor carries a current of 10.0 A through a uniform 0.70-T magnetic field. When the
magnitude of the force on the conductor is 0.5 N, the angle between the current and the magnetic field is
a. 8.2°
d. 35°
b. 0.036°
e. 0.14°
c. 2.1°
A 6.0-cm straight conductor carries a current of 14 A through a uniform 0.70-T magnetic field. When the
magnitude of the force on the conductor is 0.42 N, the angle between the current and the magnetic field is
a. 0.71°
d. 36°
b. 0.25°
e. 46°
c. 0.15°
A 50.0-cm straight conductor carries a current of 10.0 A through a uniform magnetic field. The magnitude of
the force on the conductor is 0.50 N. The angle between the current and the magnetic field is 50.0°. What is
the magnitude of the magnetic field?
a. 1.9 T
d. 12 000 T
b. 190 N
e. 120 T
c. 0.13 T
____ 179. A straight conductor carries a current of 15.0 A through a uniform 0.800-T magnetic field. When the
magnitude of the force on the conductor is 0.426 N and the angle between the current and the magnetic field
is 35.0°, what is the length of the conductor?
a. 0.0619 m
d. 16.2 m
b. 986 m
e. 25.2 m
c. 0.0152 m
____ 180. Magnetic force is equal to
a.
d.
b.
e.
c.
____ 181. A conductor is located between the poles of a horseshoe magnet. Current flows in the direction indicated by
the arrow on the diagram.
In which direction will the conductor move?
a. upward
d. right
b. left
e. out of the page
c. downward
____ 182. A conductor is located between the poles of a horseshoe magnet. Current flows in the direction indicated by
the arrow on the diagram.
In which direction will the conductor move?
a. upward
d. left
b. downward
e. right
c. into the page
____ 183. Using the right-hand rule for the motor principle, the right thumb points
a. toward the north pole of the magnetic field
b. in the direction of the current
c. in the direction of the force
d. toward the south pole of the magnetic field
e. opposite to the direction of the current
____ 184. What is the magnitude of the magnetic field 4.5 cm from a long, straight conductor carrying a current of 6.3
A?
a. 8.9  10–6 T
d. 2.8  101 T
–9
b. 2.9  10 T
e. 2.8  10–1 T
–5
c. 2.8  10 T
____ 185. The magnitude of the magnetic field 1.0 m from a long, straight conductor is 5.47  10–5 T. The current
flowing through the wire must be
a. 2.7  102 A
d. 1.8  104 A
–10
b. 4.3  10 A
e. 5.5  10–5 A
c. 1.1  10–11 A
____ 186. At what distance from a straight conductor, carrying a current of 6.0 A, is the magnitude of the magnetic field
4.6  10–4 T?
a. 2.8  10–3 m
d. 2.1  103 m
–5
b. 7.7  10 m
e. 2.6  10–-3 m
c. 3.8  102 m
____ 187. Which of the following statements about the solenoid diagram below is incorrect?
a. The direction of the magnetic field is perpendicular to WX and YZ.
b. The direction of the magnetic field is parallel to XY.
c. The magnitude of the magnetic field along XY is B.
d. The magnitude of the magnetic field along ZW is B.
e. The net current flowing through the area WXYZ is NI.
____ 188. What is the magnitude of the magnetic field in the core of a 10.0 cm long solenoid with 200 turns, carrying a
current of 5.00 A?
a. 1.00  102 T
d. 5.03  10–6 T
b. 1.00  104 T
e. 1.26  10–2 T
7
c. 7.96  10 T
____ 189. What is the current flowing through a 4.0 cm long solenoid with 150 turns and a magnetic field of 3.6  10–3
T in its core?
a. 2.2  100 A
d. 1.3  100 A
b. 7.6  10–1 A
e. 4.8  102 A
–2
c. 2.2  10 A
____ 190. How many turns are required in a 10.5 cm long solenoid with 3.5 A flowing through it to generate a magnetic
field of 9.5  10–4 T in its core?
a. 2.8  104
d. 4.9  1010
10
b. 3.1  10
e. 4.9  101
c. 2.3  101
____ 191. What is the length of a solenoid with 250 turns and 7.5 A flowing through it, having a magnetic field of 2.6 
10–3 T in its core?
a. 1.1  100 m
d. 9.1  10–1 m
0
b. 1.1  10 m
e. 4.9  10–1 m
0
c. 4.9  10 m
____ 192. What is the magnetic field at point Y halfway between the two conductors in the diagram below?
a. zero
d.
, into the page
b.
e.
, out of the page
, into the page
c.
, out of the page
____ 193. What will happen in the following diagram showing two current-carrying conductors?
a. The conductors will attract one another.
b. The conductors will both move upward.
c. The conductors will repel one another.
d. The conductors will both move downward.
e. Nothing will happen.
____ 194. What will happen in the following diagram showing two current-carrying conductors?
a. The conductors will attract one another.
b. The conductors will both move upward.
c. The conductors will repel one another.
d. The conductors will both move downward.
e. Nothing will happen.
____ 195. The magnitude of the force between two parallel straight conductors 2.0 m long and 8.0 cm apart, each
carrying a current of 6.0 A is
a. 1.9  102 N
d. 1.3  105 N
b. 9.6  10–1 N
e. 3.0  10–5 N
–4
c. 1.8  10 N
____ 196. Two parallel conductors 10.0 m long and 2.0 cm apart are to carry equal currents. The force each conductor
experiences due to the other is not to exceed 3.0  10–1 N. The maximum possible current in each conductor is
a. 7.5  108 A
d. 3.0  103 A
b. 6.0  10–2 A
e. 2.5  10–1 A
____ 197.
____ 198.
____ 199.
____ 200.
____ 201.
____ 202.
c. 5.5  101 A
A straight wire carrying a current of 2.0 A is next to another wire carrying a current of 5.0 A. If the magnitude
of the force between them is 4.5  10–-2 N/m, then the distance between the wires is
a. 4.4  10–5 m
d. 4.5  10–1 m
–2
b. 7.1  10 m
e. 2.3  10–4 m
4
c. 2.3  10 m
Two long, straight wires are parallel to each other and are 1.0 cm apart. The current through wire I is 3.0 A
and the current through wire II is 10.0 A. Each is flowing in opposite directions. Which of the following
statements best describes the force per unit length on wire 1?
a. 6.0  10–6 N/m, toward wire II
b. 6.0  10–4 N/m, away from wire II
c. 3.8  10–5 N/m, toward from wire II
d. 6.0  10–6 N/m, away from wire II
e. 6.0  10–4 N/m, toward wire II
If a magnetic field changes near a conducting plate, currents are induced within the plate, forming closed
circular paths called
a. induction currents
d. eddy currents
b. magnetic fields
e. Lenz’s paths
c. induction fields
Which factor does NOT affect the strength of an electromagnet?
a. direction of the windings
d. number of turns in the coil
b. resistance of the coil
e. permeability of the core
c. diameter of the coil
A permanent magnet is held still in the centre of a coil connected to a galvanometer. The galvanometer needle
will
a. steadily increase
d. steadily decrease and then increase
b. steadily decrease
e. be steady and have a zero reading
c. be steady and have a nonzero value
In the diagram below, a permanent magnet is pulled upward through a horizontal loop of wire.
Which of the following describes the induced current as viewed from above?
a. clockwise then counterclockwise
d. counterclockwise
b. clockwise
e. No current is induced.
c. counterclockwise then clockwise
____ 203. In the diagram below, a permanent magnet located above the loop is pushed downward through the loop of
wire.
Which of the following describes the induced current as viewed from above?
a. clockwise then counterclockwise
d. counterclockwise
b. clockwise
e. No current is induced.
c. counterclockwise then clockwise
Fields
Answer Section
MODIFIED TRUE/FALSE
1. ANS:
LOC:
2. ANS:
LOC:
3. ANS:
LOC:
4. ANS:
LOC:
5. ANS:
LOC:
6. ANS:
LOC:
7. ANS:
LOC:
8. ANS:
LOC:
9. ANS:
LOC:
10. ANS:
LOC:
11. ANS:
LOC:
12. ANS:
LOC:
13. ANS:
LOC:
14. ANS:
LOC:
15. ANS:
LOC:
16. ANS:
LOC:
17. ANS:
F, near the surface of a planet
EM1.06
F, valid everywhere
EM1.06
T
EM1.06
F, square
EM1.06
F, directly
EM1.06
T
EM1.06
F, decreases
EM1.06
F, is valid
EM1.06
T
EM1.07
F, be the same
EM1.06
T
EM1.07
F, possible
EM1.07
T
EM1.07
F, does not need to be known
EM1.07
F, charged positively
EG1.01
T
EG1.01
F, called induced charge separation
REF:
18. ANS:
LOC:
19. ANS:
LOC:
20. ANS:
K/U
OBJ: 7.1
LOC: EG1.01
T
REF: K/U
EG1.01
T
REF: K/U
EG1.02
F, square of the distance between the charges
REF: K/U
OBJ: 7.2
21. ANS: F, increases by a factor of 4
REF: K/U
OBJ: 6.1
REF: K/U
OBJ: 6.1
REF: MC
OBJ: 6.1
REF: C
OBJ: 6.2
REF: C
OBJ: 6.2
REF: K/U
OBJ: 6.2
REF: K/U
OBJ: 6.2
REF: K/U
OBJ: 6.3
REF: C
OBJ: 6.3
REF: K/U
OBJ: 6.3
REF: K/U
OBJ: 6.3
REF: K/U
OBJ: 6.3
REF: K/U
OBJ: 6.3
REF: K/U
OBJ: 6.3
REF: K/U
OBJ: 7.1
REF: K/U
OBJ: 7.1
LOC: EG1.02
REF: K/U
OBJ: 7.1
OBJ: 7.2
OBJ: 7.2
LOC:
22. ANS:
LOC:
23. ANS:
EG1.02
T
REF: K/U
EG1.02
F, whereas the electric force can attract or repel
REF:
24. ANS:
LOC:
25. ANS:
LOC:
26. ANS:
K/U
OBJ: 7.2
LOC: EG1.02
F, small positive charge
REF: K/U
OBJ: 7.3
EG1.04
T
REF: K/U
OBJ: 7.3
EG1.04
F, uniform anywhere in the space between the plates except near the ends
REF:
27. ANS:
LOC:
28. ANS:
K/U
OBJ: 7.3
LOC: EG1.04
T
REF: K/U
EG1.04
F, positive charges and end on negative charges
REF: K/U
29. ANS: T
LOC: EG1.05
30. ANS: F
joules per coulomb
joules per volts
REF:
31. ANS:
LOC:
32. ANS:
LOC:
33. ANS:
LOC:
OBJ: 7.3
C
OBJ: 7.4
F, positive charge
EG1.05
T
EG1.05
T
EG1.05
34. ANS: F, potential difference of
OBJ: 7.2
OBJ: 7.3
LOC: EG1.04
REF: K/U
OBJ: 7.4
LOC: EG1.01
REF: K/U
OBJ: 7.4
REF: K/U
OBJ: 7.4
REF: C
OBJ: 7.4
REF: C
OBJ: 7.4
LOC: EG1.05
35. ANS: F, the electric force up cancels the gravitational force down
REF:
36. ANS:
LOC:
37. ANS:
LOC:
38. ANS:
LOC:
39. ANS:
LOC:
40. ANS:
LOC:
41. ANS:
K/U
OBJ: 7.5
F, 1.602  10–19 C
EG1.01
T
EG1.01
T
EG1.01
T
EG1.06
T
EG1.06
T
LOC: EG1.04
REF: K/U
OBJ: 7.5
REF: K/U
OBJ: 7.5
REF: K/U
OBJ: 7.5
REF: K/U
OBJ: 7.6
REF: K/U
OBJ: 7.6
REF: MC
OBJ: 7.6
LOC:
42. ANS:
LOC:
43. ANS:
LOC:
44. ANS:
LOC:
45. ANS:
LOC:
46. ANS:
47.
48.
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
60.
61.
REF:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
ANS:
LOC:
62. ANS:
LOC:
63. ANS:
LOC:
64. ANS:
EG1.06
F, the closer together the lines
EG1.01
F, not aligned
EG1.01
F, magnetic north
EG1.01
T
EG1.01
F, iron nickel cobalt and gadolinium
REF: K/U
OBJ: 8.1
REF: K/U
OBJ: 8.1
REF: K/U
OBJ: 8.1
REF: K/U
OBJ: 8.1
K/U
OBJ: 8.1
T
EG1.01
T
EG1.01
T
EG1.01
T
EG1.08
F, perpendicular
EG1.08
F, directed into
REF:
EG1.08
T
EG1.08
T
EG1.04
F, directly proportional
EG1.08
T
EG1.08
F,
EG1.08
T
EG1.08
F, increases
EG1.04
F,
EG1.04
T
EG1.04
LOC: EG1.01
REF: K/U
OBJ: 8.1
REF: K/U
OBJ: 8.1
REF: K/U
OBJ: 8.1
REF: K/U
OBJ: 8.2
REF: K/U
OBJ: 8.2
K/U
8.2
F,
EG1.01
F, two parallel
EG1.01
F, changing
OBJ:
REF: K/U
OBJ: 8.2
REF: K/U
OBJ: 8.2
REF: K/U
OBJ: 8.3
REF: K/U
OBJ: 8.3
REF: K/U
OBJ: 8.3
REF: K/U
OBJ: 8.3
REF: K/U
OBJ: 8.4
REF: K/U
OBJ: 8.4
REF: K/U
OBJ: 8.4
REF: C
OBJ: 8.4
REF: C
OBJ: 8.4
REF: K/U
OBJ: 8.5
LOC:
65. ANS:
LOC:
66. ANS:
LOC:
EG1.01
T
EG1.01
T
EG1.01
REF: K/U
OBJ: 8.5
REF: K/U
OBJ: 8.5
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
MULTIPLE CHOICE
67.
68.
69.
70.
71.
72.
73.
74.
75.
76.
77.
78.
79.
80.
81.
82.
83.
84.
85.
86.
87.
88.
89.
90.
91.
92.
93.
94.
95.
96.
97.
98.
99.
100.
101.
102.
103.
104.
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
B
A
D
B
E
C
C
C
E
B
C
D
B
E
D
C
C
B
A
C
A
A
E
C
C
B
A
A
C
E
C
C
D
E
B
C
E
D
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
6.1
6.1
6.1
6.1
6.1
6.1
6.1
6.1
6.1
6.2
6.2
6.2
6.2
6.2
6.2
6.2
6.3
6.3
6.2
6.2
6.3
6.3
6.3
6.3
6.2
6.3
6.3
6.3
6.2
6.3
6.3
6.3
6.3
7.1
7.1
7.1
7.1
7.1
EM1.06
EM1.06
EM1.06
EM1.06
EM1.06
EM1.06
EM1.06
EM1.06
EM1.06
EM1.06
EM1.06
EM1.06
EM1.06
EM1.06
EM1.06
EM1.06
EM1.07
EM1.07
EM1.06
EM1.06
EM1.06
EM1.07
EM1.07
EM1.07
EM1.06
EM1.07
EM1.07
EM1.07
EM1.07
EM1.07
EM1.07
EM1.07
EM1.07
EG1.01
EG1.01
EG1.01
EG1.01
EG1.01
105.
106.
107.
108.
109.
110.
111.
112.
113.
114.
115.
116.
117.
118.
119.
120.
121.
122.
123.
124.
125.
126.
127.
128.
129.
130.
131.
132.
133.
134.
135.
136.
137.
138.
139.
140.
141.
142.
143.
144.
145.
146.
147.
148.
149.
150.
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
A
B
D
C
A
B
E
D
B
A
C
D
D
A
B
C
E
A
D
B
E
A
C
A
E
B
A
D
E
A
B
D
C
B
E
E
E
C
A
B
D
A
E
A
B
E
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
C
C
C
C
C
C
C
K/U
C
C
C
K/U
K/U
K/U
K/U
C
C
C
C
C
C
C
C
K/U
K/U
K/U
C
K/U
C
C
C
C
C
C
C
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
7.1
7.1
7.1
7.1
7.1
7.1
7.1
7.1
7.1
7.1
7.1
7.2
7.2
7.2
7.2
7.2
7.2
7.2
7.2
7.2
7.2
7.2
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.3
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.4
7.5
7.5
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
EG1.01
EG1.01
EG1.01
EG1.01
EG1.01
EG1.01
EG1.01
EG1.01
EG1.01
EG1.01
EG1.01
EG1.03
EG1.03
EG1.03
EG1.03
EG1.03
EG1.03
EG1.03
EG1.02
EG1.03
EG1.03
EG1.03
EG1.04
EG1.04
EG1.04
EG1.06
EG1.06
EG1.06
EG1.06
EG1.06
EG1.06
EG1.06
EG1.06
EG1.06
EG1.06
EG1.06
EG1.06
EG1.05
EG1.06
EG1.06
EG1.06
EG1.05
EG1.06
EG1.06
EG1.06
EG1.06
151.
152.
153.
154.
155.
156.
157.
158.
159.
160.
161.
162.
163.
164.
165.
166.
167.
168.
169.
170.
171.
172.
173.
174.
175.
176.
177.
178.
179.
180.
181.
182.
183.
184.
185.
186.
187.
188.
189.
190.
191.
192.
193.
194.
195.
196.
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
C
B
D
C
D
D
D
B
B
C
D
B
B
D
E
C
E
A
B
C
C
A
D
B
D
A
E
C
A
D
C
A
B
C
A
E
D
E
B
C
D
A
A
C
C
C
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
REF:
C
C
C
K/U
C
C
C
K/U
K/U
K/U
K/U
K/U
K/U
K/U
K/U
C
K/U
K/U
K/U
C
K/U
C
C
C
C
C
C
C
C
C
K/U
K/U
K/U
C
C
C
K/U
C
C
C
C
C
K/U
K/U
C
C
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
7.5
7.5
7.5
7.6
7.6
7.6
7.6
8.1
8.1
8.1
8.1
8.1
8.2
8.2
8.2
8.2
8.2
8.2
8.2
8.2
8.2
8.2
8.2
8.3
8.3
8.3
8.3
8.3
8.3
8.3
8.3
8.3
8.3
8.4
8.4
8.4
8.4
8.4
8.4
8.4
8.4
8.4
8.4
8.4
8.4
8.4
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
EG1.06
EG1.06
EG1.06
EG1.06
EG1.06
EG1.05
EG1.05
EG1.01
EG1.01
EG1.01
EG1.01
EG1.01
EG1.08
EG1.08
EG1.08
EG1.08
EG1.08
EG1.08
EG1.08
EG1.08
EG1.01
EG1.08
EG1.08
EG1.08
EG1.08
EG1.08
EG1.08
EG1.08
EG1.08
EG1.01
EG1.08
EG1.08
EG1.08
EG2.02
EG2.02
EG2.02
EG1.07
EG1.07
EG1.07
EG1.07
EG1.07
EG1.07
EG1.07
EG1.07
EG1.07
EG1.07
197.
198.
199.
200.
201.
202.
203.
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
ANS:
A
B
D
A
E
B
A
REF:
REF:
REF:
REF:
REF:
REF:
REF:
C
C
K/U
K/U
K/U
K/U
K/U
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
OBJ:
8.4
8.4
8.5
8.5
8.5
8.5
8.5
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
LOC:
EG1.07
EG1.07
EG1.01
EG1.01
EG1.01
EG1.01
EG1.01