题目内容
如图所示,一理想变压器原线圈匝数n1=l100匝,副线圈匝数n2=220匝,交流电源的电压
(V),电阻R=44
,电压表、电流表均为理想电表,则
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250010548873894.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001054700886.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001054715337.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250010548873894.jpg)
A.交流电的频率为50Hz |
B.电流表A l的示数为0.2A |
C.电流表A2的示数为![]() |
D.电压表的示数为44V |
ABD
试题分析:交流电的频率f=
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001054934771.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825001054949923.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.交流电的频率为50Hz |
B.电流表A l的示数为0.2A |
C.电流表A2的示数为![]() |
D.电压表的示数为44V |