题目内容
如图所示,n=50匝的矩形线圈abcd,边长ab=20 cm,bc=25 cm,放在磁感应强度B="0." 4 T的匀强磁场中,绕垂直于磁感线且通过线圈中线
轴匀速转动,转动角速度
="50" rad/s,线圈的总电阻r=1Ω,外电路电阻R=9Ω。试求:
(1)线圈在图示位置(线圈平面与磁感线平行)时,感应电动势的大小;
(2)1 min时间内电阻R上产生的热量Q。![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241142576173957.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114257555254.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114257570201.gif)
(1)线圈在图示位置(线圈平面与磁感线平行)时,感应电动势的大小;
(2)1 min时间内电阻R上产生的热量Q。
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241142576173957.jpg)
50N ![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241142576331203.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241142576331203.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082411425766421408.jpg)
![](http://thumb2018.1010pic.com/images/loading.gif)
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