Question

The value of magnetic potential at a distance \( r \) from a pole strength \( m \) is:

• A. \(\displaystyle \frac{\mu_0 m}{4\pi r} \)
• B. \(\displaystyle \frac{\mu_0 m}{4\pi r^2} \)
• C. \(\displaystyle \frac{\mu_0 m}{4\pi r^3} \)
• D. zero

Hint:

Magnetic potential varies inversely with distance \( r \) from the pole.

Answer 1

The Correct Option is A

The magnetic potential \( V \) at a point located at a distance \( r \) from a magnetic pole of strength \( m \) is given by the expression: \[ V = \frac{\mu_0 m}{4 \pi r}, \] where \( \mu_0 \) is the permeability of free space. This formula is analogous to the electric potential due to a point charge, and it describes how the magnetic potential decreases inversely with distance from the pole.