A circular current loop with a radius of $10$ cm is placed in the Y$-$Z plane. The loop current is $6$ A$.$ What is the torque on the loop if there is a uniform magnetic field of $0\mathrm{.}5$ T in the Z direction? $($Calculate only the magnitude of the torque$).$

Group of answer choices

$0\mathrm{.}094$ Nm

zero

$3\mathrm{.}9$ N m

$0\mathrm{.}39$ N m