Q. The magnetic induction in air at a distance $d$ from an isolated point pole of strength $m$ unit will be
A) $\frac{m}{d}$
B) $\frac{m}{d^{2}}$
C) $md$
D) $md^{2}$
Explanation
(b) $B = \frac{m}{d^{2}}$ in C.G.S. system
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.