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A bar mangnet has length 3 cm cross sec...

A bar mangnet has length 3 cm cross sectional area 2 `cm^(2)` and magnetic moment 3 `Am^(2)` the intensity of magnetisation of the bar magnet is

A

`2xx10^(5)` A/m

B

`3xx10^(5)` A/m

C

`4xx10^(5)` A/m

D

`5xx10^(5)`A/m

Text Solution

Verified by Experts

The correct Answer is:
D
Intensity of magnetisation
`I=(M)/(V)=(M)/(LxxA)`n
`=(3)/(3xx10^(-2)xx2xx10^(-4))`
`=1/2xx10^(6)`
`=5xx10^(5)` A/m
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