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AP Physics C: E&M
12.2 Magnetism and Moving Charges
BeginnerMCQConceptual20.3k
Current loop in a uniform magnetic field.
Current loop in a uniform magnetic field.
A flat, rectangular wire loop carrying a steady current lies in the xy-plane. The loop has a magnetic dipole moment \(\vec{\mu}\) directed along the \(+z\)-axis. A uniform external magnetic field \(\vec{B}\) is directed along the \(+x\)-axis.

Which of the following correctly identifies the direction of the magnetic torque \(\vec{\tau}\) exerted on the loop and describes the orientation toward which this torque tends to rotate \(\vec{\mu}\)?

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