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Electromagnetic induction

Electromagnetic induction
Which of the following circuit element stores energy in the electromagnetic field?

Variable resistor
Condenser
Resistance
Inductance

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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

350 mH
None of the listed here
3500 mH
250 mH

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

Unchanged inductance
Reduced inductance
Increased inductance
Zero inductance

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Electromagnetic induction
A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage?

0.1 s
None of the listed here
0.5 s
0.2 s

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Electromagnetic induction
In case all the flux from the current in coil 1 links with coil 2, the coefficient of coupling will be

0.5
2.5
2.0
1.0

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