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Question

Which of the following is represented by the area enclosed by a hysteresis loop (B-H curve) ?

A
Permeability
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B
Retentivity
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C
Heat energy lost per unit volume in the sample
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D
Susceptibility
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Solution

The correct option is C Heat energy lost per unit volume in the sample
Area enclosed by B-H curve represents energy lost. If the area of hysterosis loop is less energy loss is low whereas if the area of hysteresis loop is large energy loss is high.

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