Question

Give four differences between an electromagnet and a permanent magnet.

Answer 1

Differences between electromagnet and permanent magnet:

Electromagnet:

1. It is temporary magnet

2. It strength can be changed, by changing the current.

3. Polarity can be changed by changing the direction of current.

4. Produces very strong magnetic force.

Permanent Magnet

1. It is permanent magnet.

2. It strength cannot be changed.

3. Polarity cannot be changed.

4. Produces weak magnetic force.