Question

A bar magnet ahs no marking to indicate its poles. How can we find the poles of a magnet without using a magnet

Answer 1

Answer:

A freely suspended bar magnet always comes to rest in the North-South direction. The geographical North facing end of the magnet is its north pole and the geographical south facing end is its South pole. Hence, the unknown poles of a bar magnet can be marked by suspending it freely by a string.