1. Ohm's Law is given by:
a) V=IR b) I=VRI c) R=VI d) P=IV
2. The power dissipated in a resistor is given by:
a) P=VI b) P=I2R c) P=V2/R d) All of the above
3. In a series circuit, the total resistance is:
a) The same as the smallest resistance b) The sum of the individual resistances
c)
Less than the smallest resistance
d) The product of the individual resistances
4. In a parallel circuit, the total resistance is:
a) The same as the largest resistance
c) Less than the smallest resistance
smallest resistances
b) The sum of the individual resistances
d) The difference between the largest and
5. The work done to move a charge of 2 Coulombs through a potential difference of 5
Volts is:
a) 2.5 Joules
b) c) 7 Joules
6.
b) 10 Joules
d) 0.4 Joules
In an electric circuit, the flow of electrons is from:
a) Positive to negative terminal b) Negative to positive terminal
c) Both directions
7.
d) Neither direction
A battery is rated at 12V. This means it provides:
a) 12 Amperes of current b) 12 Ohms of resistance
c) 12 Watts of power
d) 12 Volts of potential difference
8.Which of the following is not a unit of power?
a) Watt
b) Joule per second
c) Kilowatt
d) Ampere
9. A superconductor is a material that:
a) Has infinite resistance
b) Has zero resistance
c) Is a perfect insulator
d) Is a perfect conductor at room temperature
10. The unit of magnetic field strength is:
a) Tesla
b) Weber
c) Ampere
d) Coulomb
11. A magnetic field can exert a force on:
a) A stationary electric charge
b) A moving electric charge
c) Both stationary and moving electric charges d) Neither stationary nor moving
electric charges
12. The right-hand rule is used to determine:
a) The direction of electric current
current-carrying conductor
conductor in a magnetic field
b) The direction of magnetic field around a
c) The direction of force on a current-carrying
d) The direction of induced current
13. The unit of magnetic flux is:
a) Tesla
b) Weber
c) Ampere
d) Coulomb
14. Lenz's Law states that:
a) The induced emf is always proportional to the rate of change of magnetic flux
b)
The direction of induced current is such that it opposes the change in magnetic flux c)
The total flux through a closed surface is zero d) Magnetic flux is quantized
15. A transformer works on the principle of:
a) Ohm’s Law b) Coulomb’s Law c) Electromagnetic induction d) Ampere’s Law
16. The magnetic permeability of a material is a measure of:
a) Its ability to conduct electric current
c) Its resistance to magnetic field
b) Its ability to become magnetized
d) Its resistance to electric current
17. The direction of the magnetic force on a moving charge in a magnetic field is
given by:
a) Fleming’s Right-Hand Rule
Hand Thumb Rule
b) Fleming’s Left-Hand Rule c) Rightd) Left-Hand Thumb Rule
18. The force between two parallel current-carrying conductors is:
a) Attractive if the currents are in the same direction b) Repulsive if the currents are
in the same direction
c) Zero if the currents are in opposite directions
d)
Always attractive
19. The unit of conductance is:
a) Ohm
b) Siemens (S)
b) Volt
d) Ampere
20. The unit of permittivity in a vacuum is:
a) Farad per meter (F/m)
b) Henry per meter (H/m)
c) Weber per meter (Wb/m) d) Tesla per meter (T/m)
21. The unit of permeability in a vacuum is:
a) Henry per meter (H/m) b) Farad per meter (F/m)
b) Weber per meter (Wb/m) d) Tesla per meter (T/m)