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Q.

A copper coil is connected to a galvanometer. Is it true that a momentary deflection is observed in the galvanometer when a bar magnet is pushed into the coil?

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a

True

b

False

answer is A.

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Detailed Solution

The above statement is True.
A momentary current is produced when a bar magnet is pushed into the coil first; thus, the galvanometer needle gets deflected momentarily. A brief deflection in the galvanometer is seen when the north pole is forced into the coil, which suggests that a brief current has been produced in the coil. There is no deflection in the galvanometer when the magnet is at rest, which shows that the coil is not producing any current.

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