A magnet of magnetic moment 2J/T is alin...

A magnet of magnetic moment 2J/T is alined in the direaction of magnetic field of 0.1T. What is the net work done to bring the magnet normal to the magnetic field ?

`0.5 J`

`1 J`

`2.0 J`

zero

Text Solution

Verified by Experts

The correct Answer is:

`U_(i)=-MB`
`U_(f)=MB`
`W=DeltaU=2 MB=2xx2.5xx0.2 =1J`

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