Question

An iron needle is attracted to the ends of a bar magnet but not to the middle region of the magnet. Is the material making up the ends of a bare magnet different from that of the middle region?

Answer 1

An iron needle is attracted to the ends of a bar magnet but not to the middle region of the magnet

Explanation:

• No, the material which makes up a magnet's middle region is the same as the material which makes up its end.
• When an iron needle is brought closer to one of the ends of a magnet, the magnet's tip creates a point of opposite polarity on the needle, making the needle itself a magnet, and thus binding it to that pole.

• But if we put the needle closer to the magnet's centre, then both of the magnet's poles will cause opposite polarity on the needle.
• The needle will not be attracted to the centre of the magnet as a result.