The area of B-H loop for soft iron, as compared to that for steel is :
The correct answer is: (B) Less. The area of the B-H hysteresis loop for soft iron is less than that for steel, indicating lower energy loss during magnetization cycles. Soft iron is used in electromagnets due to its low hysteresis loss and high magnetic permeability.
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The area of the B-H loop represents energy loss per cycle. Soft iron has a narrow B-H loop, meaning it loses less energy and is easily magnetized and demagnetized. Steel, being a hard magnetic material, has a wider loop and higher energy loss. Therefore, the B-H loop area for soft iron is less than that for steel.
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