Which of the following statement related to hysteresis loop is incorrect ?

Question

Which of the following statement 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) Coercitivity 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 magnetising field is removed

Tardigrade Admin · Accepted Answer

The hysteresis loop i.e. area of B-H curve is a measure of energy dissipiated per cycle per unit volume of the specimen. It depends on the nature of magnetic material.

Q. Which of the following statement related to hysteresis loop is incorrect ?

The curve of B against H for a ferromagnetic material is called hysteresis loop

The area of B-H curve is a measure of power dissipated per cycle per unit area of the specimen

Coercitivity is a measure of the magnetic field required to destroy the residual magnetism of ferromagnetic material

The retentivity of a specimen is the measure of magnetic field remaining in the specimen when the magnetising field is removed

The hysteresis loop i.e. area of $B - H$ curve is a measure of energy dissipiated per cycle per unit volume of the specimen. It depends on the nature of magnetic material.