any 3 salient features of hysteresis loop

Dear Student, 

From, hysteresis curve, for the given value of H, the value of I and B are not unique. 
we can also study about retentivity and coercivity of the material from this curve. The loss of energy per unit volume of the specimen per cycle of the magnetisation can be calculated as the area of I-H loop of the specimen.

Regards 

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