A rectangular loop of sides 20cm×10cm having 50 turns carries a current of 5A. It is placed in a uniform magnetic field of 0.30T so that the angle between the field and the normal to the loop is 30∘. Calculate the magnitude of the torque acting on the loop.
a) 1.50N m
b) 0.75N m
c) 1.30N m
d) 0.375N m