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प्रश्न
State two ways of magnetising an iron piece?
उत्तर
The two ways of magnetising an iron piece are:
1. Magnetic induction method:
Take a long iron nail and test it for magnetic properties by bringing near the magnetic substances. You will see nail does not attract the magnetic substances. Now bring near a pole of a bar magnet to the head of the nail. Now bring the iron paper clips near the pointed end of the nail, you will observe that the iron paper clips now get attracted towards the nail. This is because the iron nail has become a magnet. Now take the bar magnet away from the iron nail, paper clips fall off. This magnetism is temporary.
2. Single touch method:
Take a demagnetised piece of iron. Place it on a stable surface. Take a magnet and select its one pole. Now MB it with the selected pole on the iron in one direction several times. After some time, the iron piece turns into a magnet.
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