Difference between electromagnets and permanent magnets.

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Solution

Electromagnets
Permanent magnets
1. It is made of soft iron. It is made of steel.
2. It can be made into a very strong magnet. Its magnetic strength cannot be changed.
3. The poles of an electromagnet can be reversed. The polarity of a permanent magnet cannot be changed.
4. It is a temporary magnet. Magnetism can be turned off by switching off the current. The magnetism of a permanent magnet is permanent as the name suggests.

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List the difference between permanent and temporary magnets.

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	Electromagnets	Permanent magnets
1.	It is made of soft iron.	It is made of steel.
2.	It can be made into a very strong magnet.	Its magnetic strength cannot be changed.
3.	The poles of an electromagnet can be reversed.	The polarity of a permanent magnet cannot be changed.
4.	It is a temporary magnet. Magnetism can be turned off by switching off the current.	The magnetism of a permanent magnet is permanent as the name suggests.