A conducting wire is in North-South direction. It is freely dropped towards Earth. Is an emf induced between its ends? Why?
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Explanation:
The magnitude of induced emf in a circuit is equal to the rate of change of magnetic flux linked with it. Here, the the ends of the wire are pointed towards the magnetic field of Earth, which is in north-south direction. Hence, minimum flux is linked to the surface and no emf is induced in the wire.
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