本题目来源于试卷: Physics Unit21: Electromagnetic Induction & Faraday's Law，类别为 国际高中通用物理
[单选题]
Doubling the strengthywn(q/p y7;eisk;c w,zg 1 0fw of t,z ;c2+,jrvxovcq+ze he magnetic field through a loop of wire produces what+ e,,cqzx ;vvcoz+r 2j kind of change on the induced $emf$, 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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