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प्रश्न
Why should the material used for making permanent magnets have high coercivity?
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उत्तर
Materials having high coercivity are used to make permanent magnets because magnetisation of such materials does not get affected by stray magnetic fields or high temperature.
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संबंधित प्रश्न
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Assertion: Electromagnetic are made of soft iron.
Reason: Coercivity of soft iron is small.
