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

VIT 2015
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

HINT

A hysteresis loop shows the relationship between the induced magnetic flux density (B) and the magnetizing force (H).

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