Charging and Discharging of capacitor

?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: 匿名未登录开始时间: 24年08月22日 11:06 切换到: 整卷模式

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09.36: For the RC circuit shown, tm)h4v h* 1lc7pzhnwvbt 1 1bw29we)pphe resistance is R = 0.10 R, the capacitance is C =5.0 F and the battery has voltage ξ=12 V. The capacitor is initially uncharged when the switch S is closed vwz4pl1h1 7p*)w m2hv )wh9bc pe btn1at 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 circuita- b *rum4m4lhs shown below, which will take the least time to charge th h4ubmam4-* rle capacitor(s) to 90% of the full charge? All batteries are ideal and identical with EMF ξ , all resistors are identical with 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 showlvc/4slht g( 1d(:eqbn,the switch S has been left open for a very longtime. All circuits elements are considered to be ideal. Which one of the following statements best describes the behavior of the current thqc/b(h 4g(del1 svl: trough 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 closed at time t=0. All cio(fxc a m8d(y5rcuit elements are idx85 dfmyoa(c (eal 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?

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