Current Electricity – Online MCQs – Physics 10th

1. The property of a body to oppose the flow of electric charge through it is called electric ___________.

capacitance

resistance

conductance

potential

2. It is the rate of the transfer of energy:

capacitance

electrical power

current

potential difference

3. The length of g conductor is halved. Its resistance will be:

halved

the same

doubled

zero

4. An instrument which detects electric current is known as:

transducer

galvanometer

resistor

voltmeter

5. Which statement is TRUE for the conductance of a conductor (K)?

Its unit is the Ohm (Ω) and it is equal to R.

Its unit is mho (Q^–1) and it is equal to 1/R.

Its unit is Ohm (Ω) and it is equal to 1/R.

Its unit is mho (Ω^–1) and it is equal to R.

6. A current that always flows in one direction only is called:

direct current

None of them

conventional current

alternating current

7. Ohm’s law states that:

resistance decreases as current increases

resistance increases as voltage increases

resistance increases as current increases

current increases as voltage increases

8. potential difference is measure in:

ampere

Coulomb

N/C

volt

9. The (K) in Ohm’s law (I = KV) indicated the:

None of these

resistance

conductance

Coulomb’s constant

10. The resistivity of the material ρ is measured in:

Ωm^–1

Ωm

Ω^–1

11. Two resistances of 6 Ω and 12 Ω are connected in parallel. Their net resistance is:

6 Ω

7 Ω

60 Ω

50 Ω

12. Ohm’s law can be applied directly to:

None of them

inductor circuits

capacitor circuits

capacitor and inductor circuits

13. Mathematically Ohm’s law can be written as:

I α (1/R)

I α V

I α R

I α (1/V)

14. A current that reverses its direction periodically is called:

alternating current

conventional current

direct current

None of them

15. S.I unit of EMF is:

volt

statvolt

ampere

J / C

16. In the series combination of two or more resistances:

the voltage through each resistance is the same

both current and voltage through each resistance are the same

neither current nor voltage through each resistance is the same

the current through each resistance is the same

17. Which statement is TRUE for an electric current?

it does not obey the law of vector addition

It sometimes obeys the law of vector addition

It does not have a direction

it always obeys the law of vector addition.

18. Motion of any charge moving from one point to another point is Called:

potential difference

electric intensity

current

electromotive force

19. The current we get from a battery is a/an:

direct and alternative current

direct current

alternating current

None of them

20. In an electric circuit when electrons move from low to the high potential they will:

gain energy

lose their identity

lose energy

gain potential

Online MCQs Test | Unit 15 : Current Electricity | Physics Class 10th | Sindh Board Science Group