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Question

You are given an iron strip. How will you convert it into a magnet?



Your Answer
A

By putting into hot water 

Your Answer
B

By placing a magnet near it for few hours

Correct Answer
C

By rubbing it with a magnet for few minutes

Your Answer
D

It can't be converted          


Solution

The correct option is C

By rubbing it with a magnet for few minutes


There are several methods for making magnets. Take a rectangular piece of iron. Place it on the table. Now take a bar magnet and place one of its poles near one edge of the bar of iron. Without lifting the bar magnet, move it along the length of the iron bar till you reach the other end. Now, lift the magnet and bring the pole (the same pole you started with) to the same point of the iron bar from which you began. Move the magnet again along the iron bar in the same direction as you did before.  Repeat this process about 30-40 times. Bring a pin or some iron filings near the iron bar to check whether it has become a magnet. If not, continue the process for some more time. And eventually, your piece of iron will behave like a magnet.

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