题目内容
如图所示,一个矩形线圈abcd,已知ab为l1,ad为l2,在磁感应强度为B的匀强磁场中绕OO′轴以角速度ω(从图中位置开始)匀速转动.则线圈中感应电动势的大小为____________.![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241207191991601.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241207191991601.jpg)
Bl1l2ωsinωt
当线圈平面与磁场方向平行时,产生的感应电动势最大:
Em=Bl1vab·2,vab=
·ω,ε=Emsinωt
综上可知:ε=Bl1l2ωsinωt.
Em=Bl1vab·2,vab=
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120719215450.png)
综上可知:ε=Bl1l2ωsinωt.
![](http://thumb2018.1010pic.com/images/loading.gif)
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