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The length of a magnet of moment 5Am^(2)...

The length of a magnet of moment `5Am^(2)` is `14cm`. The magnetic induction at a point, equidistant form both the poles is `3.2xx10^(-5)Wb//m^(3)`. The distance of the point form either pole is

A

`25 cm`

B

`10 cm`

C

15 cm`

D

`5 cm`

Text Solution

Verified by Experts

The correct Answer is:
A
`B_(e)=(mu_(0))/(4pi)(M)/(x^(3))"where"x=sqrt(d^(2)+l^(2))`
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