Current is induced in a coil by electromagnetic induction when :

Foundation

Physics Foundation

EMI

Question

Coil and the magnet move with respect to each other.

Only the magnet moves towards the coil.

Only the coil moves in a magnetic field.

None of the above.

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Electromagnetic induction occurs when there is a change in magnetic flux through a coil. This change can be caused by:

A magnet moving relative to a stationary coil.
A coil moving relative to a stationary magnet.
Both moving relative to each other.

The induced EMF is given by Faraday's law: $ε = - \frac{d Φ}{d t}$ , where Φ is magnetic flux. Therefore, the first option is correct as relative motion is the key requirement.

Final Answer: Coil and the magnet move with respect to each other.