Distinguish between permanent and temporary magnets.
Difference between permanent and temporary magnets:
Permanent magnet | Temporary magnet |
It does not lose its magnetism when the cause producing it is removed. | It loses its magnetism as soon as the the cause producing it is removed. |
It is generally made of steel. | It is generally made of soft iron. |
It has fixed north and south poles. | The position of the north and south poles can be changed. |
It does not losses its magnetism over time. | It losses it magnetism over time. |
Its magnetic strength is fixed. | Its magnetic strength can be changed. |