Class 10 Physics MCQs – Practice Test 7 (Chapter 4)

Electromagnetism Quiz with Answers PDF Download – Test 7

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Electromagnetism Quiz – Practice Test 7 PDF Download

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

Faraday
Ampere
Fleming
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:

ideal transformer
step-down transformer
step-up transformer
negative transformer

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

current in coil
Electromotive force (EMF) in the coil
frequency in coil
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:

3000 volts
1500 volts
1000 volts
2000 volts

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

current acting on the coil
torque acting on the coil
couple acting on the coil
light acting on the coil

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