Question

A coil of insulated copper wire is connected to a galvanometer. what will happen if 1 the bar magnet is pushed inside the coil 2 withdrawn from the coil 3 held stationary in the coil​

Answer 1

Answer:

1) needle is displaced in a certain direction

2) needle is displaced in the opposite direction to the first case

3) There is no displacement in the needle

Explanation:

Answer 2

Answer:

1. When you pushed the bar magnet inside the coil it lead to the production of induced current(process called electromagnetic induction) in the coil and galvanometer shows deflection.
2. when you withdraw the coil again induced current is produced due to change in magnetic flux now this time the deflection of the galvanometer is in reverse direction.
3. No induced current is produced because when you held it stationary lead to no change in magnetic flux and it cause no deflection in galvanometer.

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