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A rectangular coil PQ has 2n turns an ar...

A rectangular coil `PQ` has `2n` turns an area `2a` and carries a current `2I` (refer figure) The plane of the coil is at `60^(@)` to a horizontal unifrom magnetic field of flux density `B` The torque on the coil due to magnetic force is
.

A

Ban`Isin60^(@)`

B

8 Ban`Icos60^(@)`

C

4 an`I Bsin60^(@)`

D

none

Text Solution

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The correct Answer is:
B
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