Current Electricity – Online MCQs – Physics 10th

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

gain energy

lose energy

lose their identity

gain potential

2. In an electric circuit an ammeter is always connected in:

series

none of the above

mixed

parallel

3. If we turn the TV volume down, we’re actually turning up the:

conductivity

inductance

capacitance

resistance

4. The amount of energy required to move the charge from lower potential to higher potential of the battery is called:

potential difference

electromotive force

electric intensity

current

5. The S.I unit of electric current is:

volt

Coulomb

N / C

ampere

6. Electrical power is measured in units of:

watts

chemical energy

joules

heat energy

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

60 Ω

6 Ω

7 Ω

50 Ω

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

the voltage through each resistance is the same

the current through each resistance is the same

neither current nor voltage through each resistance is the same

both current and voltage through each resistance are the same

9. When current flows from the positive terminal to the negative terminal of the battery is called:

electric current

conventional current

zero current

positive current

10. Which of the following is the purpose of connecting a battery in an electric circuit?

To maintain a varying potential difference across the conductor

To maintain a constant potential difference across the conductor

To vary the resistance across the conductor

To maintain resistance across the conductor

11. Resistance of a conductor does not depend on:

resistivity

length of the conductor

density

area of cross section

12. S.I unit of EMF is:

volt

ampere

J / C

statvolt

13. 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 Ohm (Ω) and it is equal to 1/R.

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

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

14. Energy dissipated = ______________

None of these

VIt

I²Rt

both of these

15. In an electric circuit a voltmeter is always connected in:

none of these

series

parallel

mixed

16. Which one of these is an example of non-ohmic devices?

Both of these

thermistors and crystal rectifiers

None of these

vacuum tubes and diodes

17. potential difference is measure in:

Coulomb

ampere

volt

N/C

18. Reciprocal of resistivity is called:

conductivity

capacitance

current

resistance

19. Ohm’s law is valid when the temperature of the conductor is:

very low

very high

varying

constant

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

electromotive force

current

electric intensity

potential difference

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