本题目来源于试卷: Charging and Discharging of capacitor,类别为 美国物理杯赛(Physics Bowl)
[单选题]
14.38: In the circuit shown,the switch S ug70;;yd4ppqd aqd0gb klq*8 has been left ope r xsz.qhz3 :,jsp1f/t n for a very longtime. All circuits elements are consid p,hsqrzfs /.z1:tx j3ered to be ideal. 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.
参考答案: A
本题详细解析:
暂无
|