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A coil in the shape of an equilateral tr...

A coil in the shape of an equilateral triangle of side 0.02 m is suspended from a vertex such that it is hanging in a vertical plane between the pole pieces of a permanent magnet producing a horizontal magnetic field of `5 xx 10^(-2) T.` Find the couple acting on the coil when a current of 0.1 A is passed through it and the magnetic field is parallel to its plane.

A

`15sqrt(3)xx10^(-7)N-m`

B

`15sqrt(3)xx10^(-10)N-m`

C

`(sqrt(3))/(15)xx10^(-7)N-m`

D

none of these

Text Solution

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The correct Answer is:
D
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