Question

why does a magnetic needle gets deflected when bought near a wire carrying current? why does it becomes an electromagnet?​

Answer 1

Answer:

When a current carrying conductor passes over a magnetic needle from south to north it deflects towards the west.It is known that the magnetic lines of force around the conductor is circular as according to right hand thumb rule.

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Answer 2

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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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