Question

a coil of insulated copper wire is connected to a galvanometer what happens if a bar magnet is pushed into the coil withdrawn from inside the coil held stationary inside the coil give reasons for your observations mention one more method of inducing current in a coil

Answer 1

When the bar magnet is inserted in the coil then current is induced and hence a deflection is seen in the galvanometer.

When the bar magnet is taken out from the coil then a deflection in opposite direction is seen.

When the bar magnet is held stationery in the coil then no current is induced in the coil and hence the needle of the galvanometer is in the middle indicating zero....


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Answer 2

$\huge\underline\mathfrak\blue{Answer}$

(i) when magnet is pushed near a bar magnet then it induces current due to electromagnetic induction.

(ii) When the bar magnet is withdrawn from inside the coil of the insulated copper wire again the current is induced in the coil but this time it is in reverse direction.

(iii) When a bar magnet is held stationary inside the coil then no current is induced that’s why galvanometer will show no deflection.