题目内容
如图所示,线圈的面积S=1×10-5 m2,匝数n=100,两端连接一电容器C="20" μF,线圈中的匀强磁场的磁感应强度按
="0.1" T/s增加,则电容器所带的电荷量为_____________C.![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241210158073213.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121015792307.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241210158073213.jpg)
2.0×10-9
线圈中的感应电动势E=n
=nS
=100×1×10-5×0.1 V=10-4 V
电容器所带的电荷量Q=CE=20×10-6×10-4 C=2.0×10-9 C.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121015823301.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824121015792307.gif)
电容器所带的电荷量Q=CE=20×10-6×10-4 C=2.0×10-9 C.
![](http://thumb2018.1010pic.com/images/loading.gif)
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