Class 10 Physics Chapter 14 MCQs – Current Electricity (FBISE)

Description: Practice Class 10 Physics Chapter 14 MCQs on Current Electricity. These important objective questions are prepared according to the FBISE exam pattern and include conceptual, numerical, and knowledge-based MCQs.

1. The rate of flow of electric charge is called:

A) Electric current
B) Resistance
C) Voltage
D) Power

2. The SI unit of electric current is:

A) Volt
B) Ampere
C) Ohm
D) Coulomb

3. Electric current is measured by:

A) Voltmeter
B) Galvanometer
C) Ammeter
D) Electroscope

4. The SI unit of resistance is:

A) Volt
B) Ampere
C) Watt
D) Ohm

5. Ohm’s law states that:

A) V \propto I
B) V \propto \frac{1}{I}
C) R \propto I
D) P \propto R

6. Ohm’s law is represented by:

A) P = VI
B) V = IR
C) I = PR
D) R = VP

7. Resistance depends upon:

A) Length of conductor
B) Area of conductor
C) Nature, length, and area
D) Color of conductor

8. A material having low resistance is called:

A) Conductor
B) Insulator
C) Semiconductor
D) Dielectric

9. Copper is commonly used in electrical wiring because it is:

A) Cheap
B) Light
C) Magnetic
D) Good conductor

10. The opposition offered to current is called:

A) Voltage
B) Resistance
C) Charge
D) Power

11. The SI unit of potential difference is:

A) Ohm
B) Watt
C) Volt
D) Coulomb

12. Potential difference is measured by:

A) Ammeter
B) Thermometer
C) Barometer
D) Voltmeter

13. An ammeter is connected in:

A) Series
B) Parallel
C) Mixed form
D) Open circuit

14. A voltmeter is connected in:

A) Series
B) Parallel
C) Closed circuit
D) None

15. The SI unit of electrical power is:

A) Volt
B) Ampere
C) Watt
D) Ohm

16. Electrical power is given by:

A) P = IR
B) P = \frac{V}{I}
C) P = \frac{I}{R}
D) P = VI

17. The heating effect of current was discovered by:

A) Joule
B) Newton
C) Faraday
D) Einstein

18. The heating effect produced by current depends upon:

A) Color of wire
B) Resistance, current, and time
C) Shape of battery
D) Size of switch

19. The commercial unit of electrical energy is:

A) Joule
B) Watt
C) Kilowatt-hour
D) Volt

20. One kilowatt-hour is equal to:

A) 3.6 \times 10^6\,J
B) 3.6 \times 10^3\,J
C) 360\,J
D) 36\,J

21. Fuse wire is connected in:

A) Parallel
B) Neutral line only
C) Earth wire
D) Series

22. A fuse protects electrical appliances from:

A) Low voltage
B) Excess current
C) Dust
D) Heat only

23. The resistance of a conductor increases with increase in:

A) Length
B) Area
C) Voltage
D) Charge

24. Resistance decreases when area of conductor:

A) Decreases
B) Becomes zero
C) Increases
D) Remains same

25. The SI unit of resistivity is:

A) \Omega
B) V
C) A
D) \Omega m

26. Nichrome wire is commonly used in heaters because of its:

A) High resistance
B) Low melting point
C) Low resistance
D) Transparency

27. A circuit breaker automatically breaks the circuit when:

A) Voltage decreases
B) Excess current flows
C) Resistance increases
D) Temperature decreases

28. Electric current in metallic conductors is due to movement of:

A) Protons
B) Neutrons
C) Electrons
D) Nuclei

29. Dry cell converts:

A) Chemical energy into electrical energy
B) Electrical energy into heat energy
C) Mechanical energy into electrical energy
D) Heat energy into chemical energy

30. The current through a conductor is 2\,A. The charge flowing in 5\,s will be:

A) 2\,C
B) 5\,C
C) 7\,C
D) 10\,C

31. If V = 12\,V and I = 3\,A, resistance is:

A) 2\,\Omega
B) 4\,\Omega
C) 6\,\Omega
D) 12\,\Omega

32. A voltmeter has:

A) High resistance
B) Low resistance
C) Zero resistance
D) Infinite current

33. An ammeter has:

A) High resistance
B) Infinite resistance
C) Very low resistance
D) Negative resistance

34. The filament of an electric bulb is usually made of:

A) Copper
B) Iron
C) Aluminum
D) Tungsten

35. Tungsten is used in bulb filament because of its:

A) High melting point
B) Low resistance
C) Low density
D) Transparency

36. The current in a circuit decreases if resistance:

A) Decreases
B) Increases
C) Becomes zero
D) Remains same

37. Electric power can also be expressed as:

A) P = \frac{R}{I}
B) P = VI^2
C) P = I^2R
D) P = \frac{I}{V}

38. Which quantity is measured in coulomb?

A) Voltage
B) Current
C) Resistance
D) Electric charge

39. Electric current is a:

A) Scalar quantity
B) Vector quantity
C) Tensor quantity
D) Force

40. Which of the following has highest resistance?

A) Silver
B) Nichrome
C) Copper
D) Aluminum

41. The resistance of a conductor depends upon temperature because:

A) Current changes
B) Voltage changes
C) Atomic vibrations change
D) Charge disappears

42. A short circuit occurs when:

A) Resistance becomes high
B) Current becomes zero
C) Voltage decreases
D) Live and neutral wires touch

43. The device used to open or close a circuit is:

A) Switch
B) Resistor
C) Capacitor
D) Transformer

44. In household wiring, appliances are connected in:

A) Series
B) Parallel
C) Mixed combination
D) Circular form

45. The current through a conductor is directly proportional to:

A) Resistance
B) Length
C) Voltage
D) Area

46. Which quantity opposes the flow of current?

A) Power
B) Charge
C) Voltage
D) Resistance

47. The formula H = I^2Rt represents:

A) Joule’s law of heating
B) Ohm’s law
C) Newton’s law
D) Faraday’s law

48. The wire used in fuses should have:

A) High melting point
B) Low melting point
C) Zero resistance
D) Infinite resistance

49. The flow of electrons in a conductor is opposite to:

A) Resistance
B) Voltage
C) Conventional current
D) Electric field

50. Electrical appliances in homes generally operate on:

A) Alternating current
B) Direct current
C) Static current
D) Magnetic current

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