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]
Doubling the strength of the magnetic x h 7;l*ktbju,field thg6w q)4pzs(of.jizzus f 4m35c.+i cmrough a loop of wire produces what kind of change on the induce 54.c ciwz).6fsz fu +mz4(osiqmj gp3d $emf$, assuming all other factors remain constant?
A. The induced $emf$ is 4 times as much.
B. The induced $emf$ is twice as much.
C. The induced $emf$ is half as much.
D. There is no change in the induced $emf$.
参考答案: B
本题详细解析:
暂无
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