题目内容
如图所示,a、b直线分别表示由同种材料制成的两条长度相同、粗细均匀的电阻丝甲、乙的伏安曲线,若RA、RB表示甲、乙电阻丝的电阻,则以下判断正确的是( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250028199172102.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250028199172102.jpg)
A.a代表的电阻丝较粗 |
B.b代表的电阻线较粗 |
C.RA>RB |
D.RA<RB |
BC
试题分析:导线的电阻R=
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002819933406.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002819964456.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.a代表的电阻丝较粗 |
B.b代表的电阻线较粗 |
C.RA>RB |
D.RA<RB |