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Electromagnetic induction

Electromagnetic induction
The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns.

Yes
No

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Electromagnetic induction
The self inductances of two coils are 8 mH and 18 mH. If the coefficient of coupling is 0.5, the mutual inductance of the coils is

36 mH
6 mH
12 mH
18 mH

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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
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

6 H
10 H
9 H
12 H

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Electromagnetic induction
If current in a conductor increases then according to Lenz's law self-induced voltage will

Tend to decrease the amount of current
Produce current opposite to the increasing current
Aid the increasing current
Aid the applied voltage

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

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

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