Question

what causes the compass needle to deflect when it is placed near the current carrying wire​

Answer 1

Answer:

If you hold a compass near a wire through which current is flowing, the needle on the compass will be deflected. Since compasses work by pointing along magnetic field lines, this means that there must be a magnetic field near the wire through which the current is flowing.

Explanation:

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Answer 2

Explanation:

current carrying wire attracts that needle because when current is pass through that wire it make a magnetic field in its surrounding.