题目内容
如图甲所示螺线管匝数,
匝,横截
面积
cm2,电阻
,与螺线管串联的外电阻
,
,穿过螺线管方向向右的匀强磁场的磁感应强度按乙所示规律变化,求
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241258261496729.gif)
小题1:磁场随时间变化的
表达式?
小题2:求磁感应电动势
小题3: 3s内电荷量?
小题4:若磁场与面成300角,
则磁感应电动势为多少?
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125825541316.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412582566572.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125825665280.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125825790298.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125825806331.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824125825821337.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241258261496729.gif)
小题1:磁场随时间变化的
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412582616585.gif)
小题2:求磁感应电动势
小题3: 3s内电荷量?
小题4:若磁场与面成300角,
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412582618072.gif)
小题1:2t+2
小题2:6v
小题3:0.8A 2.4C
小题4:3V
略
![](http://thumb2018.1010pic.com/images/loading.gif)
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