A Circular Coil of Wire of 200 Turns and Diameter

question 75

Multiple Choice

A circular coil of wire of 200 turns and diameter 2.0 cm carries a current of 4.0 A. It is placed in a magnetic field of 0.70 T with the plane of the coil making an angle of 30° with the magnetic field. What is the magnetic torque on the coil?

• A) 0.15 N ∙ m
• B) 0.088 N ∙ m
• C) 0.29 N ∙ m
• D) 0.40 N ∙ m
• E) 0.076 N ∙ m

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