Question

Why does compass needle get deflected when the current through a wire switched on

Answer 1

compass needle get deflected when the current through a wire switched on because current flowing in wire produce magnetic feild

Answer 2

$\bigstar\rm\purple{Answer}\bigstar$

The $\sf{\bold{compass\:needle}}$ is a small magnet. When the compass needle is brought close to a bar magnet, the magnetic field lines of the compass needle interact with the magnetic field lines of bar magnet, which causes the compass needle to deflect.

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