Q. The radius of a circular loop is $r$ and a current $i$ is flowing in it. The equivalent magnetic moment will be
A) $ir$
B) $2\pi ir$
C) $i\pi r^{2}$
D) $\frac{1}{r^{2}}$
Explanation
(c) $M = i\pi r^{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.