在如图所示的电路中,E为电源电动势,r为电源内阻,
和
均为定值电阻,
为滑动变阻器,已知
的总阻值大于
,
,合上开关S,V示数为U,A1和A2示数分别为
、
,现将
的滑动触点由最左端向右端移动的过程中,则下列判断正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/b23c2148-88f6-41e9-a14c-f44261e927d3.png?resizew=274)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f20f21a9d50b61dac519a3ddab539d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2c4640b2bee411935f588fc5433c74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f20f21a9d50b61dac519a3ddab539d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1c0a3713ed5eddfe065df76ee3a336d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f1ac49b4139636fb1809fe970b23a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1a0fd1ad044a9ecfcba672779bd678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efc18a5bb2e53586331b2a58538a48b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/b23c2148-88f6-41e9-a14c-f44261e927d3.png?resizew=274)
A.U先减小后增大,![]() |
B.U先增大后减小,![]() |
C.U的变化量与![]() |
D.U与![]() |
22-23高二上·上海黄浦·阶段练习 查看更多[3]
上海市大同中学2022-2023学年高二上学期11月练习卷物理试题(等级)江西省宜春市樟树中学2022-2023学年高三上学期12月月考物理试题(已下线)重难点10 电路与恒定电流-2023年高考物理【热点·重点·难点】专练(上海专用)
更新时间:2022-12-08 20:20:05
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