Class 10 Physics MCQs - Chapter 4

Electromagnetism Quiz Questions and Answers PDF - 7

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Electromagnetism Questions & Answers PDF Download: MCQ Quiz 7

MCQ 31: When a current passes through a conductor, it produces a magnetic field around it. This is discovered by

A) Faraday

B) Ampere

C) Fleming

D) Johns Burge

MCQ 32: The electric power delivered to the secondary circuit is equal to the power supplied to the primary circuit in a/an

A) ideal transformer

B) step-down transformer

C) step-up transformer

D) negative transformer

MCQ 33: Change in no. of magnetic field lines induces

A) current in coil

B) Electromotive force (EMF) in the coil

C) frequency in coil

D) all of above

MCQ 34: A step-up transform has a turns ratio of 1: 200. An alternating supply of 15 V is connected across the primary coil. The secondary voltage should be

A) 3000 volts

B) 1500 volts

C) 1000 volts

D) 2000 volts

MCQ 35: The current-carrying loop inside the magnetic field rotate due to the

A) current acting on the coil

B) torque acting on the coil

C) couple acting on the coil

D) light acting on the coil

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