Q. Which of the following is represented by the area enclosed by a hysteresis loop (B-H curve)?
A) Permeability
B) Retentivity
C) Heat energy lost per unit volume in the sample
D) Susceptibility
Explanation
(c) Area enclosed by $B - H$ curve represents energy lost. If the area of hysteresis loop is less energy loss is low whereas if the area of hysteresis loop is large energy loss is high.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.