本题目来源于试卷: Physics Unit20: Magnetism，类别为 国际高中通用物理
[单选题]
A circular loop of wire of radius 0.50 m is in a uniform magnetic fi0amldqd)c8g y5vu2l * 1bd8xzeld of 0.dvrd2( m6gkhg wi91dqn* onkgp 8)c9- 30 T. The current in the loop is 2.0 A. What is theqmrdg-*6owd8 )g nihcg( k dv n9p912k magnetic torque when the plane of the loop is perpendicular to the magnetic field?
A. zero
B. $0.41 \; m \cdot N$
C. $0.47 \; m \cdot N$
D. $0.52 \; m \cdot N$
参考答案: A
本题详细解析:
暂无
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