Question

A coil of insulated copper wire is connected to a galvanometer.what would happen if a bar magnet is 1). Pushed into the coil? 2). Withdrawn from the coil? 3). Held stationary inside the coil?

Answer 1

(i) If the magnet is pushed into the coil, the galvanometer shows momentary deflection in a certain direction .

(ii) If the magnet is withdrawn, the galvanometer deflects in the opposite direction.

(iii) If the magnet is held inside the coil, no current is induced and the galvanometer stops deflecting

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