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The magnetic moment produced in a substa...

The magnetic moment produced in a substance of `1 gm is 6xx10^(-7) "ampere","metre"^(2)`. If its density is `5 gm//cm^(3)`, then the intensity of magnetisation in `A//m` will be

A

`8.3xx10^(6)`

B

3

C

`1.2xx10^(-7)`

D

`3xx10^(-6)`

Text Solution

Verified by Experts

The correct Answer is:
2
`I=M/V=M/mass//density`
Given Mass = 1gm=`10^(-3)`kg
and density=`5gm//cm^(3)=5xx410^(-3)kg/(10^(-2))^(3) m^(3)=5xx10^(3) Kg//m^(3)`
Hence`I=6xx10^(-7)xx5xx10^(3)/10^(-3)=3`
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