why does the compass needle get deflected when it is brought near awire carrying current?
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The simplest explanation is that the needle aligns itself with the direction of the magnetic field lines. Since the lines are perpendicular to the direction of current, the needle will try to align that way also. It is only deflected west because Earth's magnetic field is still pulling the needle to point north. The needle will point along the resultant vector
This should be simple enough to test with a wire and a couple of 9-volt batteries. If you try this, be careful not to short the batteries because shorted batteries can be dangerous.
This should be simple enough to test with a wire and a couple of 9-volt batteries. If you try this, be careful not to short the batteries because shorted batteries can be dangerous.
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♤ Compass needle is a tiny pivoted magnet
♤ it experienced a force exerted by a magnetic field set due to a bar magnet.
♤ due to this magnetic force compass needle gets deflected when it is brought ear to a bar magnet.
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