State two differences between an electromagnet and a permanent magnet.

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Solution

Electromagnet Permanent magnet

It is made of soft iron. It is made of steel.

The magnetic field strength can be changed. The magnetic field strength cannot be changed.

The polarity of an electromagnet can be reversed. The polarity of a permanent magnet cannot be reversed.

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State two differences between an electromagnet and a permanent magnet.

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Electromagnet	Permanent magnet
It is made of soft iron.	It is made of steel.
The magnetic field strength can be changed.	The magnetic field strength cannot be changed.
The polarity of an electromagnet can be reversed.	The polarity of a permanent magnet cannot be reversed.