First slide

The bar magnet

Question

Two isolated north poles of pole strengths 16 A-m and 4 A-m are at 30 cm apart in air. The distance of neutral point from the weaker pole is

Moderate

A

5 cm
B

10 cm
C

25 cm
D

15 cm

Solution

$\begin{array}{rcl} x & = & \frac{r}{\sqrt{\frac{m_{2}}{m_{1}}} + 1} = \frac{30}{\sqrt{\frac{16}{4}} + 1}, \\ x & = & 10 cm \end{array}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App