Question

How does the strength of a magnet change along its length?

Answer 1

Magnetic moment (M = M . 2l) becomes halved because, length is also halved. The pole strength of each piece when a bar magnet is cut into two equal halves perpendicular to its length is the same as the pole strength of the original bar magnet. ... A bar magnet of magnetic moment M is cut into two parts of equal length.

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Answer 2

The strength of magnet changes along its length because the magnet will big then thi power of magnet would also increase.
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