题目内容
如图所示,直线A是电源的路端电压和电流的关系图线,直线B、C分别是电阻R1、R2的两端电压与电流的关系图线,若将这两个电阻分别接到该电源上,则( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250021453612847.jpg)
A.R1接在电源上时,电源的效率高
B.R2接在电源上时,电源的效率高
C.R1接在电源上时,电源的输出功率大
D.电源的输出功率一样大
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250021453612847.jpg)
A.R1接在电源上时,电源的效率高
B.R2接在电源上时,电源的效率高
C.R1接在电源上时,电源的输出功率大
D.电源的输出功率一样大
A
试题分析:根据路端电压
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002145377546.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002145392517.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002145408473.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250021454391258.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002145455327.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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