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 diameter of a loop of wire produces what kindv:;ikwzf:(nna2s bz s. hn(f 9 of c1i:tpqx;:p n fhange on the induced1;f:qi xppnt: $emf$, assuming all other factors remain constant?
A. The induced $emf$ is 4 times as much.
B. The induced $emf$ is twice times as much.
C. The induced $emf$ is half as much.
D. There is no change in the induced $emf$.
参考答案: A
本题详细解析:
暂无
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