question_answer

Three identical iron bars are kept on a table. Two out of three bars are magnets. In one of the magnet, north-south poles are marked. How will you find out which of the other two bars is a magnet? Identify the poles of this magnet.

Answer:

It can found in following ways-

(i) Suspend the bar magnet with marked poles freely using a stand and thread.

(ii) Bring the another magnet slowly near the south pole of the suspended magnet.

(iii) If the magnet attracts towards it, then it will be the north pole of another magnet and vice-versa.

(iv) Repeat the same procedure with third magnet. Like poles repel each other while unlike poles attract.