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1 . 如图所示,面积为S、匝数为N的矩形线框在磁感应强度为B的匀强磁场中绕垂直于磁感线的轴
匀速转动,通过滑环向理想变压器供电,灯泡
、
、
均正常发光。已知
、
、
的额定功率均为P,额定电流均为I,线框及导线电阻不计,不考虑电流变化对小灯泡电阻的影响,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/270ddac9587bf1ea553914cb69595ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e76322da99c521981992a53339042c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afbfe404ad5febf1904d763974967b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cddc914628565e13f2980fdfa8caa739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e76322da99c521981992a53339042c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7afbfe404ad5febf1904d763974967b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cddc914628565e13f2980fdfa8caa739.png)
A.理想变压器原、副线圈的匝数比为![]() |
B.线框在图示位置时,穿过线框的磁通量变化率最小 |
C.若把副线圈上的小灯泡![]() ![]() |
D.线框转动的角速度为![]() |
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