Page 82 - Science Class 6 Times Publication

Uses of magnets

Ancient people used natural magnet, i.e. loadstone to  nd the
direction. But at present, magnets have got a variety of uses. Some
of the uses of magnets are given below:

1. Magnets are used in many devices such as radio, television,
computer, speaker, telephone, etc.
2. They are used to make magnetic compass, magnetic toys,
magnetic tapes, etc.
3. They are used in iron industries to lift heavy loads.

4. They are also used to separate magnetic substances from
non-magnetic substances in the industries.

5. They are used in hospitals to remove iron or steel particles from
the eyes or wounds of patients.
6. They are used in generators to produce electricity by a
phenomenon called electromagnetic induction.
7. A magnet is also used in bicycle dynamo.

Main Points to Remember

1. A magnet is a substance which attracts magnetic substances
and always comes to rest showing north-south directions
when suspended freely.

2. The substances which are attracted by a magnet are called
magnetic substances.

3. The substances which are not attracted by a magnet are
called non-magnetic substances.
4. The end of a freely suspended magnet which points towards
the north is called north pole.
5. The end of a freely suspended magnet which points towards
the south is called south pole.

6. A magnet has the following properties:
a. A freely suspended magnet always comes to rest showing
the north-south directions.
b. A magnet attracts magnetic substances.

Times' Crucial Science and Environment 78 Book 6