Question Paper
Class / Subject: Class 10 (CBSE) · Science
Chapter: Chapter 12 — Chapter 12: Magnetic Effects of Electric Current
Time Allowed: 15 minutes
Max Marks: 6
1. The rule used to find the direction of a magnetic field around a wire is the: [1]
(A) right-hand thumb rule
(B) left-hand rule
(C) Ohm's rule
(D) Faraday's rule
2. A solenoid's magnetic field resembles that of a: [1]
(A) bar magnet
(B) horseshoe magnet only
(C) electric field
(D) gravitational field
3. The strength of an electromagnet depends on: [1]
(A) current, number of coil turns, and core material
(B) only the wire colour
(C) only the wire length
(D) nothing, it is always constant
4. The principle behind an electric generator is: [1]
(A) electromagnetic induction
(B) Ohm's law
(C) reflection of light
(D) refraction of light
5. Electromagnetic induction was discovered by: [1]
(A) Michael Faraday
(B) Isaac Newton
(C) James Watt
(D) Albert Einstein
6. An electric motor converts: [1]
(A) electrical energy into mechanical energy
(B) mechanical energy into electrical energy
(C) light energy into electrical energy
(D) heat into light