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 th+,-z fcvam,oef f6yi1 e magnetip(g hgs6l32hdq 7n,vgc field through a loop of wire produces what kind of change on the inggvd2 3,lsg( qh hp7n6duced $emf$, 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
| 
