Electricity and Circuits: 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)?Electricity and Circuits: Capacitor

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习题练习：Electricity and Circuits: Capacitor

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作者: admin 发布日期: 2026-05-21 09:01 总分: 4分得分: _____________

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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09.36: For the RC circuit shown, the resisth t21ooe, zudyjh bg1f07d 5t0ance 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 at time t=0. At sometime later, the current in the circuit is 0.50 A. What is the magnitud0uo d7,tg12dy1ft5 zh hobj 0ee 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 below, which will take the leastx zgabu,y3t 0kgn4 u40qhev:2 time to charge the capaaxt,ezvy 4gb0uuk:2 4gq03h ncitor(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 shown,the switch S has been left (:xfv ihhshi6xk2u.4open for a very longtime. All circuits elements are considered to be idshvi. 4(:fuxh2hix k6eal. Which one of the following statements 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 at3sli80)vi 8nplnyv7w . )ut is closed 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 n8it7.aul i8l v0))n typsv3w is closed is the voltage across the capacitor three times as large as the voltage across the resistor?

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