Q. A current carrying small loop behaves like a small magnet. If A be its area and M its magnetic moment, the current in the loop will be
A) M/A
B) A/M
C) MA
D) $AM^{2}$
Explanation
(a) Magnetic moment, $M = iA \Rightarrow i = \frac{M}{A}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.