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Question
give an experiment to show that heating demagnetises a magnet.
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Solution
When we say that magnets can be demagnetized, we mean that they lose their ability to attract metals like iron .
Material required - Take some stapler's pins magnet , few long iron nails ; magnetic compass.
Procedure - (1) Make some weak magnet two out of the iron nails . Hold the nails head in one hand , and using other hand run the magnet down the nail to the tip , lift up and repeat the procedure .
(2) Put one of your magnetized nail in the freezer for at least an hour and the other one on a cookie sheet in a 3500 c oven for a half hour .
(3) Now bring the magnetic compass near the two nails you will find the freezed nail will deflect the needle of the compass but the heated nail will not deflect of the magnetic compass .
Material required - Take some stapler's pins magnet , few long iron nails ; magnetic compass.
Procedure - (1) Make some weak magnet two out of the iron nails . Hold the nails head in one hand , and using other hand run the magnet down the nail to the tip , lift up and repeat the procedure .
(2) Put one of your magnetized nail in the freezer for at least an hour and the other one on a cookie sheet in a 3500 c oven for a half hour .
(3) Now bring the magnetic compass near the two nails you will find the freezed nail will deflect the needle of the compass but the heated nail will not deflect of the magnetic compass .
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