题目内容
如图,长为L的导线AB放在相互平行的金属导轨上,导轨宽度为d,通过的电流为I,垂直于纸面的匀强磁场的磁感应强度为B,则AB所受的磁场力的大小为( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241236559496905.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241236559496905.png)
A.BIL | B.BIdcosθ | C.BId/sinθ | D.BIdsinθ |
C
当电流与磁场垂直时,磁场力
BId/sinθ,故C正确
故选C
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824123655980495.png)
故选C
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.BIL | B.BIdcosθ | C.BId/sinθ | D.BIdsinθ |