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Electromagnetic induction

Electromagnetic induction
A crack in the magnetic path of an inductor will result in

Zero inductance
Increased inductance
Unchanged inductance
Reduced inductance

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Electromagnetic induction
A moving magnetic field will produce the same effect as a conductor that is moving.

True
False

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Electromagnetic induction
The magnitude of the induced e.m.f. in a conductor depends on the

Flux density of the magnetic field
Amount of flux cut
Amount of flux linkages
Rate of change of flux-linkages

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Electromagnetic induction
A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is

250 mH
None of the listed here
350 mH
3500 mH

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Electromagnetic induction
Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla

400 N
1000 N
100 N
300 N

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Electromagnetic induction
Increasing the field or increasing the current will decrease the force on the conductor.

Yes
No

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MORE MCQ ON Electromagnetic induction

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