Home » Ask Physics » MAGNETISM : Why repulsion is told to be the test for magnetism?

Login

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 3,874 other subscribers

Archives

MAGNETISM : Why repulsion is told to be the test for magnetism?

Sreeda sked:

“Can a magnet lose its magnetic properties?How?
Why ‘repulsion’ and not ‘attraction’  is suggested to be a good test of finding whether a substance is a magnet or not?”

Answer:

A magnet can lose its magnetism.

A magnetic substance is made a magnet by making the molecules which are individually possessing magnetic properties align in a particular direction. In the unmagnetized state they are arranged randomly and hence do not have magnetic behaviour.

If a magnet is heated, beaten, mishandled etc, it will lose its magnetism.

Why repulsion is the sure test for magnetism?

A magnet can attract the opposite pole of other magnet as well as the magnetic substance (iron cobalt nickel). SO, if A magnet attracts another object, we cannot say that the other object is a magnet. But if the magnet repels the object, then we can surely say that the other object is a magnet. Because “Like poles of a magnet repel each other”

%d bloggers like this: