题目内容
右图所示的电路中,当滑动变阻器R2的滑动触头P向下滑动时
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/2014082500293754310070.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/2014082500293754310070.jpg)
A.电压表的读数增大 |
B.R1消耗的功率增大 |
C.电容器C两板间的电场强度减小 |
D.电容器C所带电量增多 |
AD
试题分析:当滑动变阻器
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002937558361.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002937574327.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002937589509.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002937574327.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002937558361.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002937652592.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002937667526.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.电压表的读数增大 |
B.R1消耗的功率增大 |
C.电容器C两板间的电场强度减小 |
D.电容器C所带电量增多 |