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

A coil in the shape of an equilateral triangle of side l is suspended between the pole pieces of a permanent magnet such that`vec B ` is in the plane of the coil. If due to a current i in the triangle a torque `tau` acts on it, the side l of the triangle is

A

`2((tau)/(sqrt3BI))^(1/2)`

B

`2/sqrt(3) (tau/(BI))`

C

`2(tau/(BI))^(1/2)`

D

`1/sqrt3(tau)/(BI)`

Text Solution

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The correct Answer is:
A
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