試題詳解

10. A current loop freely rotates in a uniform magnetic field (B = 0.50 T). The maximum torque on the loop is 0.60 N ∙ m. What is the magnetic dipole moment of the loop?
(A) 1.2 A·m ²
(B) 2.4 A·m ²
(C) 0.60 A·m ²
(D) 0.30 A·m ²
(E) 0.83 A·m ²