A Current of 4

question 11

Multiple Choice

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

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