Question

state two difference between Electromagnet and permanent magnet​

Answer 1

Answer:

electromagnets need to be charged and permanent magnets stay until they break

Explanation:

Answer 2

Electromagnet :-

1. It is made up of soft iron.
2. The magnetic field strength can be changed.
3. It can be easily demagnetised.
4. The polarity can be reversed.

Permanent magnet :-

1. It is made up of steel.
2. The magnetic field strength cannot be changed.
3. It cannot be easily demagnetised.
4. The polarity cannot be reversed.