Question

A bar magnet having centre O has a length of 4 cm. Point $P_1$ is in the broad side-on and $P_2$ is in the end side-on position with $O{P}_1=O{P}_2=10$ metres. The ratio of magnetic intensities H at $P_1$ and $P_2$ is

• A. $H_1:H_2=16:100$
• B. $H_1:H_2=1:2$
• C. $H_1:H_2=2:1$
• D. $H_1:H_2=100:16$

Answer 1

The correct option is B $H_1:H_2=1:2$

Magnetic intensity on end side-on position is twice than broad side on position.