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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
Which circuit element(s) will oppose the change in circuit current?

Inductance only
Capacitance only
Resistance only
Inductance and capacitance

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Electromagnetic induction
A conductor 2 meters long moves at right angles to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. The induced e.m.f. in the conductor will be

10 V
25 V
15 V
12 V

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Electromagnetic induction
In case of an inductance, current is proportional to

None of the listed here
Voltage across the inductance
Both of the listed here
Magnetic field

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

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

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Electromagnetic induction
A coil is wound on iron core which carries current I. The self-induced voltage in the coil is not affected by

Variation in voltage to the coil
The resistance of magnetic path
Change of number of turns of coil
Variation in coil current

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MORE MCQ ON Electromagnetic induction

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