如图所示,理想变压器的原副线圈匝数比
,原线圈接正弦交流电,其电压瞬时值表达式为
;副线圈接有“220V、40W”的白炽灯泡一只。当输入端接通电源后,以下说法正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/4/8/2695563620900864/2696159064121344/STEM/e712eb4c-576a-4ac0-b466-9caf655f44b3.png?resizew=205)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dec9d37d9c485cafa8303e44ca68afd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b997a9449858435927308517536a3c.png)
![](https://img.xkw.com/dksih/QBM/2021/4/8/2695563620900864/2696159064121344/STEM/e712eb4c-576a-4ac0-b466-9caf655f44b3.png?resizew=205)
A.灯泡两端的电压为150V |
B.灯泡两端的电压为110V |
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 |
更新时间:2021-04-09 16:12:34
|
【知识点】 理想变压器两端电压与匝数的关系
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B.副线圈![]() |
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