本题目来源于试卷: Electricity and Circuits: Capacitor，类别为 美国物理杯赛(Physics Bowl)
[单选题]
13.45: The switch S in the RC cir m 0 ao03yay7y1lr.+5tm kpl kix.tqo-cuit shown is closed ;y,a-h/o zw oey*9 pob at time t=0. All circuit elements are ideal and R=10.0Ω, C=2.20 F and ξ = 12.0 V. The capacitor is initially unch -zaop;9oy, */ho ewbyarged. How long after the switch is closed is the voltage across the capacitor three times as large as the voltage across the resistor?
A. 22.0s
B. 24.2s
C. 30.5s
D. 36.0s
E. 54.7s
参考答案: C
本题详细解析:
暂无
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