The couple acting on a magnet of length ...

The couple acting on a magnet of length 10cm and pole strength 15A-m, kept in a field of `B=2xx10^(-5)`, at an anlge of `30^(@)` is

`1.5xx10^(-2)Nm`

`1.5xx10^(-3)Nm`

`1.5xx10^(-5)Nm`

`1.5xx10^(-6)Nm`

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Verified by Experts

The correct Answer is:

`1.5xx10^(-5)Nm`
Explanation `tau=15xx0.1xx2xx10^(-5) sin 30^(@)`
`=1.5xx10^(-5)Nm`

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