Charging and Discharging of capacitor - 无忧得胜-网上国际课程 (5edu.win)

?作业考试练习?美国物理杯赛(Physics Bowl)?Charging and Discharging of capacitor

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习题练习：Charging and Discharging of capacitor

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答题人: 游客未登录开始时间: 24年08月22日 11:06 切换到: 整卷模式

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

09.36: For the RC circuit shown, the resistantp)v s,sb 6j p9j2sbmttb207b ce is R = 0.10 R, the capacitance is C tbbs9v)0jj,76 t tbppb22sms=5.0 F and the battery has voltage ξ=12 V. The capacitor is initially uncharged when the switch S is closed at time t=0. At sometime later, the current in the circuit is 0.50 A. What is the magnitude of the voltage across the capacitor at that moment?

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

09.41: For the circuits shown belu51 tplzkis+eb8mk g)( 2v:myow, which will take the least time to charge the capacitor(s) to 90% of the full charge? All batteries are ideal and identical with EMF ξ , all resistors are identical wl z(:m si)b2 +kk1g 8ep5uytvmith resistance R , and all capacitors are identical with capacitance C and are initially uncharged.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

14.38: In the circuit shown,the switch S has been left open for a ver,hz1 -m .1oihon6 nbegy longtime. All circuits elements are considered to be ideal. Which one of the following statem,1n 6hzegm1.ib -hnooents best describes the behavior of the current through the switch S once it is closed?

A. The current initially is 12 mA and decreases to a steady 3 mA.

B. The current initially is 3 mA and increases to a steady 12 mA.

C. The current initially is 9 mA and decreases to a steady 3 mA.

D. The current initially is 6 mA and decreases to a steady 3 mA.

E. The current is a steady 3 mA.

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单选题 ( 1.0 分) 切至整卷模式搜藏此题

13.45: The switch S in the RC circuit shown is cl sy8lc: .2q+ fjudwu/hosed 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 uncharged. How long after the switch is closed is the voltage across the capacitor three times as large as the voltage across the resistor?uyd.2:hfsq cw/ + l8uj