题目内容
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114312749425.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114312765564.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241143127962105.jpg)
A.灯泡两端的电压为150 V |
B.灯泡两端的电压为110 V |
C.灯泡实际消耗的功率为额定功率的![]() |
D.若将灯泡与副线圈断开,则副线圈两端电压为零 |
BC
原线圈接入的交流电最大值为310 V,则有效值为
;根据理想变压器的变压公式得副线圈两端电压
,灯泡实际消耗的功率
;若将灯泡与副线圈断开,则副线圈两端电压仍为110 V,故B、C正确。
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114312827689.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114312843647.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114312858669.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.灯泡两端的电压为150 V |
B.灯泡两端的电压为110 V |
C.灯泡实际消耗的功率为额定功率的![]() |
D.若将灯泡与副线圈断开,则副线圈两端电压为零 |