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Question : Magnetic keepers are used to protect magnets from:

Option 1: Earth's magnetic field

Option 2: effect of other magnets

Option 3: self-demagnetisation

Option 4: demagnetisation due to heating


Team Careers360 17th Jan, 2024
Answer (1)
Team Careers360 21st Jan, 2024

Correct Answer: self-demagnetisation


Solution : The correct option is self-demagnetisation .

Magnets are shielded against self-demagnetisation by magnetic keepers. A permanent magnet's internal magnetic domains may become disorganised when subjected to an external magnetic field that is strong enough and moving in the opposite direction. This will lower the magnet's total magnetic strength. The term demagnetisation refers to this action.

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