图示电路原已稳定，已知：R1 = R2 = R3 = 100W，C = 100 mF，US = 600 V，t = 0 时将开关S 闭合。则S 闭合后 i2 ( t )=http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/f46a48d52d214542a7d52b9387f527d6.png
举一反三
- 在图示电路中，开关S闭合前电路已处于稳态，试问闭合开关瞬间，初始值i L( 0+ )和 i (0+ )分别为http://image.zhihuishu.com/zhs/onlineexam/ueditor/201803/2c8e09f6d810444b8eb8e94d638eb946.png
- 1 Complete the words. ► h a i r c u t haircut 1 f r _ _ _ e ____ 2 s _ _ s s _ r _ ____ 3 h _ _ r s t _ _ e ____ 4 h _ _ r d _ _ _ r ____ 5 p _ _ t _ n g ____ 6 t _ _ m ____ 7 c _ l _ _ r ____ 8 b l _ w – d r _ ____
- 如图所示电路，换路前已处于稳态，t=0时闭合开关S。试求换路后（闭合S）t=0+时的i与uc（）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201904/053466736b334cee8618e15db8ff6f99.png
- 如图所示电路，换路前已处于稳态，t=0时闭合开关S。试求换路后（闭合S）t=0+时的i与uc( )。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201904/006bc2bbecc344e68c498e65823f46c6.png
- 【单选题】如图所示电路，Us=10V，R1=3欧姆，R2=2欧姆，R3=2欧姆，开关S闭合前电路处于稳态，t=0时开关S闭合。t=0+时，iL1(0+)=_________A【图片】 A. 2 B. -2 C. 2.5 D. -2.5