Which of the following statements related to hysteresis loop is incorrect? (a) The curve of \( B...

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Which of the following statements related to hysteresis loop is incorrect?
(a) The curve of \( B \) against \( H \) for a ferromagnetic material is called hysteresis loop.
(b) The area of \( B-H \) curve is a measure of power dissipated per cycle per unit area of the specimen.
(c) Coercivity is a measure of the magnetic field required to destroy the residual magnetism of ferromagnetic material.
(d) The retentivity of a specimen is the measure of magnetic field remaining in the specimen when the magnetizing field is removed.
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