A current of $11\mathrm{.}0$ mA is maintained in a single circular loop of $2\mathrm{.}60$ m circumference. A magnetic field of $0\mathrm{.}560$ T is directed parallel to the plane of the loop.

$($a$)$ Calculate the magnetic moment of the loop.

$5\mathrm{.}917$ mA $$ m$2$

$($b$)$ What is the magnitude of the torque exerted by the magnetic field on the loop?

$3\mathrm{.}331$ mN $$ m