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 resistance is R = 0.10 R, the c ;vm7*oe .rr6eqv idj2apacitance 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 sometimeo q.i27r*je6rvm;vde 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 circuitsfs-z) 71k8)fefno1n vva* nop shown below, 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 kvo-) v8fn*1)7ffapeozs n1n 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 open for a very longtime.bertq*9zhkgb: 1x,e( x4j.w u All circuits elements are considered to be ideal. Which one of the following statements best desczxtbhuex:*r9( .q bwke 1, j4gribes 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 sho)rzxp/ lr-2 cswn 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 zr/2xs-l pr )cis closed is the voltage across the capacitor three times as large as the voltage across the resistor?

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