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Question

If A is the area under the graph of the intensity magnetization in ferromagnetic material versus magnetizing field intensity, V is the volume of the magnetic sample and n is the frequency of alternating magnetic field , then the rate of hysteresis loss in the substance is

A

A
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B

AVn
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C

AVn
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D

AnV
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Solution

The correct option is B
AVn
Area of hysterisis loop gives the loss of energy per unit volume of material in one cycle of magnetization and de-magnetization.

So, Total loss per unit time will be represented by,

Area × volume× Frequency

Rate of hysteresis loss =AVn

Hence, option (B) is the correct answer.
Why this Question?
Tip: Area of hysterisis loop gives the loss of energy per unit volume of material in one cycle of magnetization and de-magnetization.

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