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Friday, 25 October 2013

Magnetism And Electromagnetism - Demagnetisation

Demagnetisation Points : Demagnetisation, Methods of Demagnetisation, By Hammering, By Heating, By Electricity Definition Loss of magnetic property is called demagnetization. Methods of Demagnetisation: A magnet can be demagnetized by the following methods.
• By hammering
• By Heating
• By Electricity
1. By Hammering: Magnet can be partially demagnetized by hammering them when they are pointing in east west direction. 2. By Heating: Magnets lose their magnetism when they are strongly heated. 3. By Electricity: A magnet can be demagnetized by placing it in a solenoid, which is carry an alternating current.

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