题目内容
图是两个电源的路端电压与电流的关系图线,由图线可知:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241512098051579.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241512098051579.png)
A.两电源电动势不等,且![]() |
B.两电源电动势相等 |
C.两电源内电阻不等,且![]() |
D.两电源内电阻相等 |
ABC
试题分析:U-I图像与纵坐标的截距表示电源电动势,所以两电源电动势相等,A错误,B正确,图线与横坐标的截距表示短路电流,所以电源内阻
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824151210054653.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824151209945418.png)
点评:做本题的关键是对图像的纵横截距的物理意义的理解
![](http://thumb2018.1010pic.com/images/loading.gif)
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