Class 10 Science MCQ Questions of Electricity with Answer

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.

MCQ Questions Class 10 Science (Multiple Choice Questions) of Electricity these inquiries are useful in correction of a part as well as in understanding the ideas moreover. With the assistance of Electricity MCQ Questions with Answers to realize their arrangement level. Multiple Choice Questions incorporates questions dependent on intext book questions and activities central matters questions.

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

Answer:

(b) voltage

Explanation:

In parallel combination, voltage remains same across two points.

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

Answer:

(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. 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

Answer:

(d) more radius

Explanation:

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

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

Answer:

(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) \(\frac{I^2R}{t}\)

Answer:

(b) \(I^2Rt\)

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

Answer:

(a) One-fourth

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

Answer:

(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. Unit of electric power may also be expressed as

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

Answer: 

(a) volt ampere

9. Electrical resistivity of a given metallic wire depends upon

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

Answer:

(d) nature of the material

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

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

Answer:

(b) volt

11. Kilowatt hour is the unit of

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

Answer:

(b) energy

12. The current flow in conductor is due to:

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

Answer:

(a) free electrons

13. Unit of resistance is:

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

Answer:

(a) Ohm

14. Ohm’s law is true for:

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

Answer:

(a) only metallic conductors

15. Electric potential is a:

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

Answer:

(a) scalar quantity

16. 1 mV is equal to:

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

Answer:

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

17. Coulomb is the SI unit of:

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

Answer:

(a) charge

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

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

Answer:

(b) conductors

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

Answer:

(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:

(c) ohm-metre