PhysicsFun with MagnetsFun with magnets – Simple process(es) to make temporary magnets

Fun with magnets – Simple process(es) to make temporary magnets

In our previous segment, we learned about what are magnets made of. In this segment, we will learn how to make a temporary magnet as well as the materials used to make permanent magnets.

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    How to make a temporary magnet?

    Using magnetisation, we can make temporary magnets. Let us look at two ways of doing it.

    Iron nail as a temporary magnet

    Any ferromagnetic material like an iron nail, vertically hung from one of the poles of a magnet acts as a temporary magnet. It retains its magnetism as long as it is in the external magnetic field of the magnet. This can be verified by bringing any lightweight ferromagnetic object in front of it. It will get attracted by the first nail.

    Iron bar as a temporary magnet

    Rubbing a magnet 30 to 40 times on a horizontal line along the length of a non- magnetised iron bar can magnetise it. It is important to rub in one direction.

    When an iron nail or any other ferromagnetic object is brought near the bar, the bar will attract it. The more you rub it, the longer it will retain its magnetism.

    What is Demagnetisation?

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