Physics Unit19: DC Circuits (id: 10f15d8a9)

本题目来源于试卷: Physics Unit19: DC Circuits，类别为 通用国际物理

[单选题]
A 2.0-mF capacitor is charged throfagsnl ,:t9 m,ugh a 50 38kvqofe i-9j$k\Omega$ resistor. How long does it take for the capacitor to reach 90% of full charge?

A. $0.90 \; s$
B. $0.23 \; s$
C. $2.2 \; s$
D. $2.3 \; s$


参考答案:  B


本题详细解析: 暂无

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