题目内容
汽车轮胎气压自动报警装置的主要部件是压阻式压力传感器,某压阻式压力传感器的特点是压力F越大其电阻越小,现将该压力传感器R0接入如图所示电路中,开关S闭合,当压力传感器所受压力增大时,下列说法正确的是
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/2014082500383295111644.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/2014082500383295111644.png)
A.电压表的示数增大 |
B.电流表的示数增大 |
C.R1的电功率增大 |
D.R2的电功率增大 |
C
试题分析:当压力传感器所受压力增大时,压敏电阻
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003832982356.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250038329981088.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003833014632.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003833029521.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003833045524.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003833060823.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003833076361.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003833092638.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003833076361.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003833123716.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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