如图,当开关
闭合后,电压表
的示数为
,电压表
的示数为
,那么灯
两端的电压为
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/98a473ec-5c76-47e0-bde6-fc4d16260129.png?resizew=156)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9e573ec93341e027774f3575846952.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26110b88e253c31dd1b35ae2b4162d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9c8a02f5ec8bbbc2f8cb0c4952a39c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44902f0f89d65356e0bb5aa61799d163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4549e7c048532d3c638f7552473e1a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/98a473ec-5c76-47e0-bde6-fc4d16260129.png?resizew=156)
A.12V | B.4V | C.8V | D.16V |
更新时间:2018-11-01 16:37:46
|
【知识点】 判断电压表的测量对象
相似题推荐
单选题
|
较易
(0.85)
解题方法
【推荐1】如图所示的三个电路中,当开关闭合后,下列说法中正确的是( )
![](https://img.xkw.com/dksih/QBM/2017/8/20/1756401069375488/1770820064796672/STEM/1063e205be644aeab42ecb70fe9d8d20.png?resizew=335)
![](https://img.xkw.com/dksih/QBM/2017/8/20/1756401069375488/1770820064796672/STEM/1063e205be644aeab42ecb70fe9d8d20.png?resizew=335)
A.甲图中的三盏灯并联,电流表测量的是干路总电流 |
B.乙图中的三盏灯并联,电流表测量的是干路总电流 |
C.丙图中的三盏灯并联,电压表测量的是灯![]() |
D.丙图中的三盏灯串联,电压表测量的是电源两端电压 |
您最近一年使用:0次
单选题
|
较易
(0.85)
解题方法
【推荐2】如图电路,电压表测量的电压是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/9e3dd1f8-e388-4b8e-aedf-185410c43ef7.png?resizew=117)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/27/9e3dd1f8-e388-4b8e-aedf-185410c43ef7.png?resizew=117)
A.电源两端的电压 | B.灯L2和电源两端的电压之和 |
C.灯L2两端的电压 | D.灯L1两端的电压 |
您最近一年使用:0次