Which of the following poles attract each other:
North-South
North-North
South-South
Hence, option (a) is correct.
Two like magnetic poles :
(a) repel each other
(b) attract each other
(c) first attract each other, then repel
(d) neither attract nor repel.
Why do opposite poles of a magnet attract each other? What is the reason behind it? What happens at the atomic level when opposite poles attract each other?