Question

How is a temporary magnet different from a permanent magnet?​

Answer 1

Answer:

temporary magnet loses its magnetism if the electric supply is switched off but this does not happens in permanent magnet I.e. it does not loses its magnetism.

Answer 2

Difference between Temporary Magnet and Permanent Magnet

Temporary magnet

1. It behaves as a magnet only for the time during which current flows through it. When no current flows through it, it looses its magnetism. Eg. Solenoid, electromagnet.
2. It produces a comparatively stronger magnetic field.
3. The strength of its magnetic field can be changed by increasing the magnitude of current or increasing the no. of turns of the coil.
4. Its polarity can be changed by changing the terminals of the cell/battery.

Permanent Magnet

1. Its magnetism is permanent, ie it can't los its magnetism.
2. It produces a comparatively weaker magnetic field.
3. The strength of its magnetic field can't be changed.
4. Its polarity can't be changed.