Q. The direction of the null points is on the equatorial line of a bar magnet, when the north pole of the magnet is pointing
A) North
B) South
C) East
D) West
Explanation
(a) $N_{1}$ and $N_{2}$ are two null points. And $B_{H} =$ Horizontal component of earth’s magnetic field
$B =$ Magnetic field due to bar magnets
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.