题目内容
如图所示,厚薄均匀的矩形金属薄片边长ab="10" cm,bc="5" cm,当将A与B接入电压为U的电路中时,电流为1 A;若将C与D接入电压为U的电路中,则电流为( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241418027681357.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241418027681357.png)
A.4 A | B.2 A | C.![]() | D.![]() |
A
本题考查的是部分电路欧姆定律问题,根据
当将A与B接入电压为U的电路中时,电流为1 A,
;若将C与D接入电压为U的电路中
;A正确;
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824141802971599.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241418030491219.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241418031431228.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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A.4 A | B.2 A | C.![]() | D.![]() |