Question

How will you find out the north pole and south pole of a bar magnet with no marking to indicate poles?

Answer 1

Answer: 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 (as shown in the given figure). Hence, the unknown poles of a bar magnet can be marked by suspending it freely by a string.':-) -


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 .