Question

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.
• D. $m d ^ { 2 }$

Answer 1

Answer: (B)

$\frac { m } { d ^ { 2 } }$

Answer 2

$B = \frac { m } { d ^ { 2 } }$in C.G.S. system