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Hysteresis

Heat generati...

Question

Heat generation in magnetization and demagnetization of a material is maximum when it has

A

High coercitivity and low retentivity

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B

High retentivity and low coercivity

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C

High coercivity and high retentivity

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D

Low coercivity and low retentivity

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Solution

The correct option is C High coercivity and high retentivity
Area under I - H curve is maximum for high coercivity and high retentivity and area under I - H curve gives heat.

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