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Moment of inertia of a megnetic needle i...

Moment of inertia of a megnetic needle is `40 gm-cm^(2)` has time period 3 seconds in earth's horizontal field `=3.6xx10^(-5) weber//m^(2)`. Its magnetic moment will be

A

`0.5Axxm^(2)`

B

`5Axxm^(2)`

C

`0.250Axxm^(2)`

D

`5xx10^(2)Axxm^(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
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