# Electricity MCQ Questions for Class 10 Science Chapter 12 with Answers

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## Q1. The electrical resistance of insulators is

(A) high
(B) low
(C) zero
(D) infinitely high

(A) resistance
(B) voltage
(C) current
(D) temperature

## Q3. Which of the following gases are filled in electric bulbs?

(A) Helium and Neon
(B) Neon and Argon
(C) Argon and Hydrogen
(D) Argon and Nitrogen

## Q4. Materials which allow larger currents to flow through them are called

(A) insulators
(B) conductors
(C) semiconductors
(D) alloys

(A) 1 Joule
(B) 10 Joule
(C) zero
(D) 100 Joule

## Q6. The electrical resistance of insulators is

(A) high
(B) low
(C) zero
(D) infinitely high

## Q7. The unit of specific resistance is

(A) ohm
(B) ohm
(C) ohm-metre
(D) ohm per metre

## Q8. Resistivity of a metallic wise depends on

(A) its length
(B) its shape
(C) its thickness
(D) nature of material

## Q9. Which of the following gases are filled in electric bulbs?

(A) Helium and Neon
(B) Neon and Argon
(C) Argon and Hydrogen
(D) Argon and Nitrogen

## Q10. Electrical resistivity of any given metallic wire depends upon

(A) its thickness
(B) its shape
(C) nature of the material
(D) its length

## Q11. Three resistors of 1 Ω, 2 ft and 3 Ω are connected in parallel. The combined resistance of the three resistors should be

(A) greater than 3 Ω
(B) less than 1 Ω
(C) equal to 2 Ω
(D) between 1 Ω and 3 Ω

(A) power
(B) energy
(C) impulse
(D) force

(A) 2.5 A
(B) 5.0 A
(C) 7.5 A
(D) 10 A

(A) 10-8 Ω-m
(B) 101 Ω-m
(C) 10-6 Ω-m
(D) 106 Ω-m

## Q15. The variable resistance is called

(A) resistor
(B) rheostat
(C) open switch
(D) none of these

## Q16. A metallic conductor has loosely bound electrons called free electrons. The metallicconductor is

(A) negatively charged
(B) positively charged
(C) neutral
(D) Either positively charged or negatively charged

## Q17. Electric potential is a:

(A) scalar quantity
(B) vector quantity
(C) neither scalar nor vector
(D) sometimes scalar and sometimes vector

## Q18. The electrical resistance of insulators is

(A) high
(B) low
(C) zero
(D) infinitely high

(A) more length
(C) less length

## Q20. The unit of e.m.f. of a cell is

(A) dyne
(B) volt
(C) ampere
(D) joule

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