explain how can you magnetise an iron needle using the single touch method
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Given a piece of iron and a bar magnet, the piece of iron can be magnetised by single touch method wherein one pole of a magnet is used to stroke the iron piece from its one end to the other end repeatedly until it gets magnetised. Take a magnet and rub the magnet against the needle for few seconds.. The needle will be magnetized..
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keep the needle on a table hold a bar magnet in your hand and move anyone of its poles over the needle from end a to end b
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