Class 10 Physics MCQs - Chapter 4

Electromagnetism Multiple Choice Questions (MCQ) PDF - 16

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Electromagnetism Questions & Answers PDF Download: MCQ Quiz 16

MCQ 76: If the secondary voltage is smaller than the primary voltage, the transformer is called a

A) positive transformer

B) step-up transformer

C) negative transformer

D) step-down transformer

MCQ 77: A device that converts electric energy into rotational kinetic energy is called

A) circuit breaker

B) transformer

C) generator

D) electric motor

MCQ 78: The loop in magnetic field rotates due to

A) Electromotive force (EMF)

B) frequency

C) resistance

D) torque

MCQ 79: If the coil is placed perpendicular to field lines then the number of lines passing through the coil is

A) minimum

B) maximum

C) zero

D) may be max. or min.

MCQ 80: If a transformer is used to supply voltage to a 15 V model train which draws a current of 0.7 A. If the voltage of the A.C source is 210 V, the current in the primary should be

A) 0.04 A

B) 0.05 A

C) 0.03 A

D) 0.02 A

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