A Circular Loop (Radius = 0 $2 \tilde { \mathbf { i } } - \tilde { \mathbf { j } } + 2 \tilde { \mathbf { k } }$

Multiple Choice

A circular loop (radius = 0.50 m) carries a current of 3.0 A and has unit normal vector of ( $2 \tilde { \mathbf { i } } - \tilde { \mathbf { j } } + 2 \tilde { \mathbf { k } }$ ) /3.What is the x component of the torque on this loop when it is placed in a uniform magnetic field of ( $2 \tilde { \mathbf { i } } - 6 \tilde { \mathbf { j } }$ ) T?

A) 4.7 N .m
B) 3.1 N .m
C) 19 N . m
D) 9.4 N . m
E) 12 N . m