Question

Point out the wrong statement about the magnetic properties of soft iron and steel

• A. Retentivity of soft iron is more than retentivity of steel.
• B. Coercivity of soft iron is less than coercivity of steel.
• C. Area of B-H loop in soft iron is smaller than the area of B-H loop for steel
• D. Area of B-H loop in soft iron is greater than the area of B-H loop for steel

Answer 1

The correct option is D Area of B-H loop in soft iron is greater than the area of B-H loop for steel

The B-H curve of both soft iron and steel are shown in figure.

From the above hysteresis curve it is clear that area of B-H loop in soft iron is smaller than that of steel.