Most Important Selected Qs for JEE AdvancedPhysicsMagnetic Properties of Matter
Which of the following statement related to hysteresis loop is incorrect?
Options
- AThe curve of B against H for a ferromagnetic material is called hysteresis loop
- BThe area of B - H curve is a measure of power dissipated per cycle per unit area of the specimen
- CCoercitivity is a measure of the magnetic field required to destroy the residual magnetism of ferromagnetic ma
- DThe retentivity of a specimen is the measure of magnetic field remaining in the specimen when the magnetising
Correct answer
B. The area of B - H curve is a measure of power dissipated per cycle per unit area of the specimen
Step-by-step solution
The hysteresis loop i.e. area of B-H curve is a measure of energy dissipated per cycle per unit volume of the specimen. It depends on the nature of magnetic material.