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The given fig.shows a coil bent with AB=...

The given fig.shows a coil bent with `AB=BC=CD=DE=EF=FG=GH=HA=1 m` and carrying current `1 A`.There exists in space a vertical uniform magnetic field of `2 T` in the `y`-direction.Then find out the torque (in vector form) on the loop.

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The correct Answer is:
`2hatk`
The torque of system = Torque on toop `[AFGH+BCPE+ABEF]`
`ISB(-hati)+ISB(hati)+ISB(hatk) (I="current",S="area of loop",B="magnetic field")`
`=ISB hatk`
`=1xx1xx2 hatk=2hatk units`
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