本题目来源于试卷: Physics Unit21: Electromagnetic Induction & Faraday's Law，类别为 通用国际物理
[单选题]
A circular loop of wire is rotated at constant nx ;otwgpz+-y, k5 ,flo+ w 2q.wiwoq2a0 54 iodzxio 6h6iv.4 zisa0rvngular speed about an axis whose direction can be varied. In a region where a uniform magnetic field points straight down, what must be the orientation of the loop.idxhzi si40v64oa0i65 ro vz's axis of rotation if the induced $emf$ is to be a maximum?
A. Any horizontal orientation will do.
B. It must make an angle of $45^{\circ}$ to the vertical.
C. It must be vertical.
D. none of the given answers
参考答案: A
本题详细解析:
暂无
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