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 long solen ; zy2 af/p.4iydl-ylyoi 5x5oj jp,tc7ep r n+x3d passes through the circuit as shown. The magnetic field of the solenoid, dir p,357rocjj nxpet5x +ected 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
| 
