Question

Why does a magnetic compass needle pointing North
and South in the absence of a nearby magnet gets
deflected when a bar magnet or a current carrying loop
is brought near it. Describe some salient features of
magnetic field lines concept.​

Answer 1

ANSWER:

A magnetic compass needle pointing North and South shows deflection when a bar magnet or a current carrying loop is brought near it. This happens because the magnetic fields of the compass needle and the bar magnet (or current carrying loop) interact with each other.

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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