Question

There is a bar magnet with no marking of poles. How will you find out the south and the North poles.

Answer 1

Answer: A freely suspended bar magnet always comes to rest in theNorth−South direction. The northfacing end of the magnet is its north pole, and the south facing end is itssouth pole (as shown in the given figure). Hence, the unknown poles of abar magnet can be marked by suspending it freely by a string.

Answer 2

we can find the polarity of bar magnet by hanging the bar magnet as freely suspended bar magnet 's one side that moves towards the earth is north pole and other would be south pole.