本题目来源于试卷: Electromagnetic Induction and Faraday’s Law and Lenz Law，类别为 美国物理杯赛(Physics Bowl)
[单选题]
08.50:. An infinitely g0o 9)gytj u0y l h9klw70*5 5vm r m y iy;h;/sobs8qaaiong solenoid passes through the circuit as shown. The magnetic fie ah wii7oarbs/50 h;9m5 8yysm lk;q v*ld of the solenoid, directed into the
plane of the page, is weakening which produces a constant emf of magnitude ξ for a closed loop around the outside of the solenoid. Once equilibrium is established in this circuit, what is the voltage across the switch S?
A. 0
B. $\xi$/3
C. $2\xi$/3
D. $\xi$
E. $4\xi$/3
参考答案: E
本题详细解析:
暂无
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