A circular loop of area `0.01 m^(2)` carrying a current of `10 A`, is held perpendicular to a magnetic field of intensity `0.1 T`. The torque acting on the loop is

Options

A. 0.01 Nm
B. 0.001 Nm
C. zero
D. 0.8 Nm

Answer

C

Explanation

`tau=barmxxbarB,barm` is in the direction `_|_` to the plane of loop.
`:.barm` & `barB` are in the same direction `:.barmxxbarB=0`