Physics
Which is not a method of demagnetising a magnet?
- Heating
- Hammering
- Suspending
- Alternating current
Magnetism
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Answer
Suspending
Reason — Demagnetisation of a magnet is achieved by following methods :
- By rough handling
- By dropping the magnet on the floor or on a hard surface a number of times
- By hammering the magnet repeatedly
- By heating the magnet to a very high temperature
- By passing alternating electric current around the magnet
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