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Electromagnetic induction

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

Inductance
Capacitance
Resistance
All of the listed here

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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

1.0
2.5
0.5
2.0

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

1000 ohms
100 ohms
5000 ohms
500 ohms

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Electromagnetic induction
An average voltage of 10 V is induced in a 250 turns solenoid as a result of a change in flux which occurs in 0.5 second. The total flux change is

0.2 wb
0.02 wb
20 wb
2 wb

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

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

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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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