Class 10 Science MCQ questions of Electricity with Answers were arranged based on the most recent pattern of exams. We have Given Electricity Class 10 Science MCQ Questions with Answers to assist students with understanding the idea well overall.

Practice Class 10 Science MCQ Questions of Electricity

1. Two devices are connected between two points say A and B in parallel. The physical quantity that will remain the same between the two points is

(a) current
(b) voltage
(c) resistance
(d) None of these

2. To get 2 Ω resistance using only 6 Ω resistors, the number of them required is

(a) 2
(b) 3
(c) 4
(d) 6

3. A fuse wire repeatedly gets burnt when used with a good heater. It is advised to use a fuse wire of

(a) more length
(b) less radius
(c) less length
(d) more radius

4. Keeping the potential difference constant, the resistance of the circuit is halved. The current will become:

(a) One-fourth
(b) Four times
(c) Half
(d) Double

5. When a current 'I' flows through a resistance 'R' for time 't' the electrical energy spent is given by

(a) \(IRt\)
(b) \(I^2Rt\)
(c) \(IR^2t\)
(d) \(\frac{I^2R}{t}\)

6. If the current flowing through a fixed resistor is halved, the heat produced in it will become:

(a) One-fourth
(b) One-half
(c) Double
(d) Four times

7. The resistivity does not change if

(a) the material is changed
(b) the temperature is changed
(c) the shape of the resistor is changed
(d) both material and temperature are changed

8. Unit of electric power may also be expressed as

(a) volt ampere
(b) kilowatt hour
(c) watt second
(d) Joule second

9. Electrical resistivity of a given metallic wire depends upon

(a) its length
(b) its thickness
(c) its shape
(d) nature of the material

10. The unit of e.m.f. of a cell is

(a) dyne
(b) volt
(c) ampere
(d) joule

11. Kilowatt hour is the unit of

(a) power
(b) energy
(c) impulse
(d) force

12. The current flow in conductor is due to:

(a) free electrons
(b) protons
(c) ions
(d) neutrons

13. Unit of resistance is:

(a) Ohm
(b) Ohm/cm
(c) Ohm-cm
(d) Volt

14. Ohm’s law is true for:

(a) only metallic conductors
(b) only non-metallic conductors
(c) only semi-conductors
(d) all of these.

15. Electric potential is a:

(a) scalar quantity
(b) vector quantity
(c) neither scalar nor vector
(d) sometimes scalar and sometimes vector

16. 1 mV is equal to:

(a) 10 volt
(b) 1000 volt
(c) \(10^{-3}\) volt
(d) \(10^{-6}\) volt

17. Coulomb is the SI unit of:

(a) charge
(b) current
(c) potential difference
(d) resistance

18. Materials which allow larger currents to flow through them are called

(a) insulators
(b) conductors
(c) semiconductors
(d) alloys

19. Conventionally, the direction of the current is taken as

(a) the direction of flow of negative charge
(b) the direction of flow of atoms
(c) the direction of flow of molecules
(d) the direction of flow of positive charge

20. The unit of specific resistance is

(a) ohm
(b) ohm
(c) ohm-metre
(d) ohm per metre

Answer key

1. (b) voltage

Explanation: In parallel combination, voltage remains same across two points.

2. (b) 3

Explanation: Three resistors of 2 Ω is required to get 6 Ω because resultant is more than individual so they all must be connected in series.

3. (d) more radius

Explanation: In order to get the working of heater properly, fused wire of higher rating must be used.

4. (d) Double

5. (b) \(I^2Rt\)

6. (a) One-fourth

7. (c) the shape of the resistor is changed

Explanation: The resistivity does not change if the shape of resistor is changed because nature of material will remain same.

8. (a) volt ampere

9. (d) nature of the material

10. (b) volt

11. (b) energy

12. (a) free electrons

13. (a) Ohm

14. (a) only metallic conductors

15. (a) scalar quantity

16. (c) \(10^{-3}\) volt

17. (a) charge

18. (b) conductors

19. (d) the direction of flow of positive charge

20. (c) ohm-metre

Click here to practice more MCQ Questions from Chapter Electricity Class 10 Science