题目内容
如图所示,一理想变压器原线圈匝数为n1=1000匝,副线圈匝数为n2=200匝,将原线圈接在
的交流电压上,副线圈上电阻R=100Ω,电流表为理想电表,下列推断正确的是( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250012380968914.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250012380811040.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250012380968914.png)
A.交流电的频率为50Hz |
B.穿过铁芯的磁通量的最大变化率为0.2Wb/s |
C.电流表的示数为![]() |
D.变压器的输入功率为16W |
AD
试题分析:根据接入电压
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250012380811040.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001238143586.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001238159996.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001238174679.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001238190821.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250012382061330.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001238221653.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001238237600.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001238252794.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001238284446.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250012382991026.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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