题目内容
如图所示,
匝矩形导线框以角速度
在磁感应强度为
的匀强磁场中绕轴
匀速转动,线框面积为
,线框的电阻为
,电感不计,外电路接电阻
、理想交流电流表
。下列说法正确的是
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250043363417120.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004336216360.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004336231308.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004336247309.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004336263363.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004336278321.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004336294260.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004336309303.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004336325894.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250043363417120.png)
A.图示位置线圈的感应电动势为![]() |
B.交流电流表的示数![]() |
C.一个周期内通过![]() ![]() |
D.![]() ![]() |
B
试题分析:图示位置是中性面位置,感应电动势为零,故A错误.感应电动势的最大值
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004336450773.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250043364811242.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250043364971029.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825004336512631.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250043365281147.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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