Question

What happens when you cut a bar magnet in half? If it were continually cut in half, then would it finally yield two magnetic monopoles? Explain.

Answer 1

You can think of a magnet as a bundle of tiny magnets, called magnetic domains, that are jammed together. Each one reinforces the magnetic fields of the others. Each one has a tiny north and south pole. If you cut one in half, the newly cut faces will become the new north or south poles of the smaller pieces. You could keep slicing smaller and smaller slices like a loaf of bread and keep getting thinner magnets, each with a new set of poles

Answer 2

You don't get two magnetic poles. Instead you get two smaller magnets: a new pair of opposite poles appears where the cut is made. So each half has a north and south poles.