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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
6 H
9 H
10 H

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Electromagnetic induction
Which of the following is not a unit of inductance?

Volt second per ampere
Hennry
All of the listed here
Coulomb/volt ampere

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Electromagnetic induction
Which of the following circuit elements will oppose the change in circuit current?

Capacitance
Inductance
All of the listed here
Resistance

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Electromagnetic induction
Air-core coils are practically free from

Hysteresis losses
Both Hysteresis losses & Eddy current losses
Eddy current losses
None of the listed here

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Electromagnetic induction
Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is

20 H
5 H
10 H
15 H

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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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