Question

At a point on the right bisector of a magnetic dipole, the magnetic :

• A. potential varies as $\frac{1}{r^2}$
• B. potential is zero at all points on the right bisector
• C. field varies as $r^3$
• D. field is perpendicular to the axis of dipole

Answer 1

Answer: (B)

Magnetic field at $P$ due to north & south pole can be resolved into components parallel to the axis of the dipole and along the bisector. Components along the bisector cancel' out: The horizontal components add up