Question

EXPLAIN THE FOLLOWING
WHAT ARE TEMPORARY MAGNET
AND WHAT ARE PERMENENT MAGNETS

Answer 1

Dear Student, Permanent magnet--------- 1)the bar magnet is a permanent magnet. 2)a permanent magnet produces a comparatively weak force of attraction. 3)the strength of a permanent magnet cannot be changed. 4)the (north-south) polarity of a permanent magnet is fixed and can't br changed. Temporary magnet--------- 1)an electromagnet is a temporary magnet.its magnetism is only fr the duration of current passing through it.So,the magnetism of an electromagnet can be switched on or switched off as desired. 2)an electromagnet can produce very strong magnetic force. 3)the strength of an electromagnet can be changed by charging the no. of turns in its coil or by changing the current passing through it. 4)the polarity of an electromagnet can be changed by changing the direction of current in its coil. Regards