A Rigid Rectangular Loop, Measuring $0.30 \mathrm {~m}$ By $0.40 \mathrm {~m}$

question 35

Multiple Choice

A rigid rectangular loop, measuring $0.30 \mathrm {~m}$ by $0.40 \mathrm {~m}$ , carries a current of $5.5 \mathrm {~A}$ , as shown in the figure. A uniform external magnetic field of magnitude $2.9 \mathrm {~T}$ in the $- x$ direction is present. Segment CD is in the $x z$ -plane and forms a $35 ^ { \circ }$ angle with the $z$ -axis, as shown. What is the magnitude of the torque that the magnetic field exerts on the loop?

• A) \(1.4 \mathrm {~N} \cdot \mathrm { m }\)
• B) \(1.6 \mathrm {~N} \cdot \mathrm { m }\)
• C) \(1.3 \mathrm {~N} \cdot \mathrm { m }\)
• D) \(1.1 \mathrm {~N} \cdot \mathrm { m }\)
• E) \(0.73 \mathrm {~N} \cdot \mathrm { m }\)

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