如图所示电路的开路电压Uoc=（ ）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/41dfa13c005f4683a44784aee888c5af.png
举一反三
- 电路如图5所示，运算放大器构成 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/ad0dc8cc2e8547ccb31a035a818c1d8d.png
- 如图所示电路的a和b之间的开路电压为（ ）V。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/e78ccce23ef94e01be07ef85205aac79.png
- 已知电路如图 4 所示，运算放大器构成http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/0547d1e3e7b44b5d8201447c92ed6e29.png
- 电路如图 4 所示，电流 I 为 。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/48dcfd6292e44a329c2d5b04973679d8.png
- 如图所示电路中，恒流源的电压为多少？http://image.zhihuishu.com/zhs/onlineexam/ueditor/201804/1b262a6aa0974538a56f93b2f576a163.png