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Electromagnetic induction

Electromagnetic induction
Two coils have self-inductances of 10 H and 2 H, the mutual inductance being zero. If the two coils are connected in series, the total inductance will be

12 H
9 H
6 H
10 H

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Electromagnetic induction
Two 300 uH coils in series without mutual coupling have a total inductance of

1200 uH
600 uH
900 uH
300 uH

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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

15 V
12 V
25 V
10 V

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Electromagnetic induction
Reversing the field or the current will reverse the force on the conductor.

Yes
No

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Electromagnetic induction
A coil with negligible resistance has 50V across it with 10 mA. The inductive reactance is

100 ohms
5000 ohms
500 ohms
1000 ohms

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

Variable resistor
Inductance
Resistance
Condenser

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MORE MCQ ON Electromagnetic induction

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