题目内容
一磁感应强度为B的匀强磁场方向水平向右,一面积为S的矩形线圈abcd如图所示放置,平面abcd与竖直方向成θ角。将abcd绕ad轴转180°角,则穿过线圈平面的磁通量的变化量为( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241356091211605.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241356091211605.png)
A.0 | B.2BS | C.2BScosθ | D.2BSsinθ |
C
本题考查的是对磁通量的理解,开始穿过线圈的磁通量为
,最后穿过线圈的磁通量是
,变化量为
,C正确。
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135609199537.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135609262545.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824135609293595.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目
题目内容
A.0 | B.2BS | C.2BScosθ | D.2BSsinθ |