The intensity of magnetic field due to an isolated pole of strength m at a pont distant r from it will be proportional to

Options

A. `m_(p)lr^(2)`
B. `m_(p)r^(2)`
C. `r^(2)lm_(p)`
D. `m_(p)lr`

Answer

A

Explanation

The magnetic intensity due to an isolated pole of strength `m_(p)` at a distance (r) = `(m_(p))/(r^(2))`