A current of 4.0 A is maintained in a single circular loop having a circumference of 80 cm. An external magnetic field of 2.0 T is directed so that the angle between the field and the plane of the loop is 20°. Determine the magnitude of the torque exerted on the loop by the magnetic forces acting upon it
a. 0.41 N × m
b. 0.14 N × m
c. 0.38 N × m
d. 0.27 N × m
e. 0.77 N × m
C
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