题目内容
如图所示,直导线处于足够大的匀强磁场中,与磁感线成θ=30°角,导线中通过的电流为I,为了增大导线所受的安培力,可采取下列四种办法,其中不正确的是( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250035457032487.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250035457032487.jpg)
A.增大电流I |
B.增加直导线的长度 |
C.使导线在纸面内顺时针转30° |
D.使导线在纸面内逆时针转60° |
C
试题分析:为了增大导线所受的磁场力,由
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003545719759.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825003545750484.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.增大电流I |
B.增加直导线的长度 |
C.使导线在纸面内顺时针转30° |
D.使导线在纸面内逆时针转60° |