Question

how will you find out the north pole and south pole of a bar magnet with no marking to indicates poles

Answer 1

A freely suspended magnet always point in North direction because earth itself behaves as a magnet. ... The south pole of earth's magnet is in geographical north because it attracts the north pole of suspended magnet .

Answer 2

We can find the poles of a bar magnet by suspending it freely by a string. A freely suspended bar magnet always comes to rest in the North−South direction. The north facing end of the magnet is its north pole, and the south facing end is its south pole.


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