Q. The intensity of magnetic field is $H$ and moment of magnet is $M$. The maximum potential energy is
A) $MH$
B) 2 $MH$
C) 3 $MH$
D) 4 $MH$
Explanation
(a) Potential energy $U = - MB\cos\theta$
$\Rightarrow U_{\max} = MH\ $[at$\ \theta = 180{^\circ}\rbrack$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.