Question

What happens if a bar magnet is cut into
two pieces (i) transverse to its length
(ii) along its length ?​

Answer 1

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When a bar magnet is cut into two pieces, it exposes two new faces with opposite poles such that each piece is still a magnet.

If the bar magnet is cut into two halves, the magnetic dipole moment of each piece is half that of the original magnet. If the bar magnet is cut transverse to its length, the new exposed poles have the same pole strengths as the original but each piece has half the magnetic length as the original. If the bar magnet is cut along its length, the new exposed poles have half the pole strengths as the original but each piece has the same magnetic length as the original.