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A magnet of magnetic moment 50 hati A m^...

A magnet of magnetic moment 50 `hati A m^2` is placed along the x-axis in a magnetic field `vecB = (0.5hati +3.0hatj)T`. The torque acting on the magnet is

A

`175hatk N-m`

B

`150hatk N-m`

C

`75hatk N-m`

D

`25sqrt(37)hatk N-m`

Text Solution

Verified by Experts

The correct Answer is:
B
`vectau = vecm xx vecB = (50hati) xx (0.5hati + 3.0hatj)=150 hatk N-m`
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