How can you demagnetise a permant
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A permanent magnet can be demagnetised by the following methods: (1) Dropping it down continously (2) By hammering (3) By heating (4) By keeping the like poles together (5) By placing the magnet in a stronger opposite field
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Permanent magnets require special manufacturing techniques in a magnetic field to get the metal to stay in the proper alignment. In order to demagnetize a magnet, you need to change this alignment. This process usually requires a high amount of heat, or a strong magnetic field at a reverse polarity to the magnet you want to demagnetize.
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