Question

Magnetic potential at a point due to magnetic dipole of moment M is proportional to:

• A. $r$
• B. $\frac{1}{r}$
• C. $r^2$
• D. $\frac{1}{r^2}$

Answer 1

Answer: (D)

$\frac{1}{r^2}$

Given : Magnetic potential at a point due to magnetic dipole of moment M is proportional to

Solution :

We have a formula for magnetic potential due to magnetic dipole of Moment M as V=$\frac{\mu M}{2\pi r^2}$

From here we can conclude that

M$\propto \frac{1}{r^2}$

The correct opt is D