MCQ Questions | Class 10 Science Chapter 12 | Electricity with Answers

MCQ | Class 10 Science Chapter 12 | Electricity Set B

Check the below NCERT MCQ Questions for Class 10 Science Chapter 12 Electricity with Answers Pdf free download. MCQ Questions for Class 10 Science with Answers were prepared based on the latest exam pattern. We have Provided Electricity Class 10 Science MCQs Questions with Answers to help students understand the concept very well.

Objective Question | Science Class 10 Chapter 12

NCERT Solutions Class 10 Science
Book:	National Council of Educational Research and Training (NCERT)
Board:	Central Board of Secondary Education (CBSE)
Class:	10th
Subject:	Science
Chapter:	12
Chapters Name:	Electricity
Medium:	English

Class 10th Science Book | Objective Type Questions

You can refer to NCERT Solutions for Class 10 Science Chapter 12 Electricity to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Electricity | Class 10 Science | NCERT Solutions

Q1.	Resistivity of a metallic wise depends on
	A. its length
	B. its shape
	C. its thickness
	D. nature of material

Ans: nature of material

Q2.	Assertion: Conductors allow the current to flow through themselves. Reason: They have free charge carriers.
	A. Both A and R are true and R is the correct explanation of A.
	B. Both A and R are true but R is not the correct explanation of A.
	C. A is true but R is false.
	D. A is false but R is true.

Ans: Both A and R are true and R is the correct explanation of A.

Q3.	Assertion: Bending of wire decrease the resistance of electric wire. Reason: The resistance of a conductor depends on length, thickness, nature of material and temperature of the conductor.
	A. Both A and R are true and R is the correct explanation of A.
	B. Both A and R are true but R is not the correct explanation of A.
	C. A is true but R is false.
	D. A is false but R is true.

Ans: Both A and R are true and R is the correct explanation of A.

Q4.	What is the commercial unit of electrical energy?
	A. Joules
	B. Kilojoules
	C. Kilowatt-hour
	D. Watt-hour

Ans: Kilowatt-hour

Q5.	A boy records that 4000 joule of work is required to transfer 10 coulomb of charge between two points of a resistor of 50 Ω. The current passing through it is
	A. 2 A
	B. 4 A
	C. 8 A
	D. 16 A

Ans: 8 A

Q6.	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

Ans: more radius

Q7.	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

Ans: less than 1 Ω

Q8.	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

Ans: Argon and Nitrogen

Q9.	Electric power is inversely proportional to
	A. resistance
	B. voltage
	C. current
	D. temperature

Ans: resistance

Q10.	An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be:
	A. 100 W
	B. 75 W
	C. 50 W
	D. 25 W

Ans: 25 W

Q11.	1 mV is equal to:
	A. 10 volt
	B. 1000 volt
	C. 10-3 volt
	D. 10-6 volt

Ans: 10-3 volt

Q12.	A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R’, then the ratio R/R’ is:
	A. 1/25
	B. 1/5
	C. 5
	D. 25

Ans: 25

Q13.	Electric potential is a:
	A. scalar quantity
	B. vector quantity
	C. neither scalar nor vector
	D. sometimes scalar and sometimes vector

Ans: scalar quantity

Q14.	What is the maximum resistance which can be made using five resistors each of 1/5 W?
	A. 1/5 Ω
	B. 10 Ω
	C. 5 Ω
	D. 1 Ω

Ans: 1 Ω

Q15.	A current of 1 A is drawn by a filament of an electric bulb. Number of electrons passing through a cross-section of the filament in 16 seconds would be roughly
	A. 1020
	B. 1016
	C. 1018
	D. 1023

Ans: 1020

Q16.	The resistance of hot filament of the bulb is about 10 times the cold resistance. What will be the resistance of 100 W-220 V lamp, when not in use?
	A. 48 Ω
	B. 400 Ω
	C. 484 Ω
	D. 48.4 Ω

Ans: 484 Ω

Q17.	The nature of the graph between potential difference and the electric current flowing through a conductor is
	A.parabolic
	B. circle
	C. straight line
	D. hyperbolic

Ans: straight line

Q18.	Two resistors are connected in series gives an equivalent resistance of 10 Ω. When connected in parallel, gives 2.4 Ω. Then the individual resistance are
	A. each of 5 Ω
	B. 6 Ω and 4 Ω
	C. 7 Ω and 4 Ω
	D. 8 Ω and 2 Ω