Whenever the magnetic flux linked with a coil changes, then there is an induced emf in the circuit. This emf lasts :

for a short time

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for a long time

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for ever

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so long as the change in the flux takes place

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Solution

The correct option is C so long as the change in the flux takes place
$E M F = - \frac{d \emptyset}{d t}$
So, till the flux is changing with respect to time EMF will be induced in the circuit.

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Whenever the magnetic flux () linked with a coil changes the emf is induced in the circuit, This emf lasts

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