1.Electricity and Magnetism
1. A positively charged rod is held near the knob of a
neutral electroscope. Which diagram best represents
the distribution of charge on the electroscope?
Name
2. As shown in the diagram below, a charged rod is held
near, but not touching, a neutral electroscope.
A)
The charge on the knob is
B)
A)
B)
C)
D)
positive and the leaves are positive
positive and the leaves are negative
negative and the leaves are positive
negative and the leaves are negative
3. When a rod is brought near a neutral electroscope, the
leaves diverge. Which statement best describes the
charge on the rod?
C)
A)
B)
C)
D)
It must be positive.
It must be negative.
It may be neutral.
It may be positive or negative.
4. When a positively charged body touches a neutral
body, the neutral body will
A) gain protons
C) gain electrons
B) lose protons
D) lose electrons
5. When an electroscope is charged by contact, the
charging body always gives the electroscope
D)
A)
B)
C)
D)
a charge opposite that of the charging body
the same charge as the charging body
a negative charge
a positive charge
6. Which diagram best illustrates a neutral electroscope
being charged by conduction?
A)
B)
C)
D)
1.Electricity and Magnetism
7. When a rubber rod is rubbed with fur, the rod
becomes negatively charged due to the transfer of
A) electrons to the fur B) protons to the fur
C) electrons to the rod D) protons to the rod
8. Base your answer to the following question on the diagram below and on your knowledge of physics.
The diagram represents two small, charged, identical metal spheres, A and B that are separated by a
distance of 2.0 meters.find the force between them
9. Sphere A carries a charge of +2 coulombs and an
11. Which of the compass needle orientations in the
identical sphere B is neutral. If the spheres touch one
figure above might correctly describe the magnet’s
another and then are separated, the charge on sphere B
field at that point
would be
A
B
C
D
A) +1 C B) +2 C C) 0 C
D) +4 C
10. Which magnitude of charge could not be found on
an object?
A)
C)
B)
D)
12Is the charge shown in the figure above positive or
?negative
1.Electricity and Magnetism
13. In the diagram below a negatively charged rod
approaches a neutral pith ball. In which direction
will the pith ball first move?
Base your answers to questions 17 and 18 on the
information and diagram below.
Two conducting spheres, A and B, are separated
by a distance of 2 meters between centers. Sphere
A has a charge of
coulomb, and sphere
B has a charge of
coulomb.
A) A
B) B
C) C
D) D
14. How is a positive charge usually given to a neutral
object ?
A)
B)
C)
D)
Neutrons are added to the object.
Electrons are removed from the object.
Protons are added to the object.
Protons are removed from the object.
15. Objects A and B are charged as shown in the
diagram. A and B are brought together and touched.
Which is the correct distribution of charge after the
two objects have been separated?
17. The force that these two spheres exert upon each
other is
A)
C)
B)
D)
18. As the distance between the two positively charged
spheres increases, the force of repulsion between
them
A) decreases
C) remain the same
B) increases
19. If the charge on one of two small charged spheres is
doubled while the distance between them remains
the same, the electrostatic force between the point
sources will be
A)
B)
A) halved
C) tripled
B) doubled
D) unchanged
20. If the charge on each of two point sources is
doubled, the electrostatic force between them
C)
D)
16. Two charges that are 2 meters apart repel each other
with a force of 2 × 10–5 Newton. If the distance
between the charges is decreased to 1 meter, the
force of repulsion will be
A) 1 × 10 –5 N
C) 8 × 10 –5 N
B) 5 × 10 –6 N
D) 4 × 10 –5 N
A)
B)
C)
D)
remains the same
is one-half as great
is twice as great
is four times as great
1.Electricity and Magnetism
.21 Which diagram represents the electric field between two oppositely charged conducting spheres?
A)
B)
C)
D)
22 Base your answer to the following question on
the diagram below which represents two small, charged conducting spheres, identical in size, located
2.00 meters apart.
23 Which diagram best represents the electric field between the two spheres?
A)
B)
C)
D)
24 .The diagram below shows a compass placed near the north pole, N. of a bar magnet
Which diagram best represents the position of the
needle of the compass as it responds to the
magnetic field of the bar magnet?
A)
B)
C)
D)
1.Electricity and Magnetism
25 As the distance between two opposite magnetic .
28 .The diagram at the below represents a bar magnet
poles increases, the flux density midway between
them
A) decreases
B) increases
C) remains the same
26 The diagram below shows the magnetic field that
results when a piece of iron is placed between
unlike magnetic poles.
The direction of the magnetic field at point P is
toward point
A) A
B) B
C) C
D) D
29 Which diagram below best represents the magnetic
field near a bar magnet?
A)
At which point is the magnetic field strength
greatest?
A) A
B) B
C) C
D) D
27 Which diagram best represents the lines of
magnetic flux between the ends of two bar
magnets?
A)
B)
C)
B)
D)
C)
D)
30
The diagram to the right
shows a point, P, located
between two oppositely
charged parallel plates.
The electric field between the plates
(A) points up, and is varying (non-uniform)
(B) points down, and is varying (non-uniform)
(C) points up, and is constant (uniform)
(D) points down, and is constant (uniform)