what are magnetic field lines ? how is direction of magnetic field at a point in a magnetic field determined using field lines
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A magnetic field line is the path along which a free north-pole tends to move. The direction of a magnetic field at a point is determined by placing a small compass needle. The N - pole of compass indicates the direction of magnetic field at that point.
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Explanation:
an area around a magnet or materials that behave like a magnet, where there is a force that will attract some metals towards it
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