题目内容
如图所示,理想变压器原副线圈匝数比为n1∶n2=4∶1,原线圈回路中的电阻A与副线圈回路中的负载电阻B的阻值相等.a、b端加一恒定交流电压后,两电阻消耗功率之比PA∶PB=________,两电阻端电压之比UA∶UB=________.![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241207340662976.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241207340662976.jpg)
1∶16 1∶4
因为![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120734128794.png)
所以PA∶PB=IA2R∶IB2R=1∶16;
UA∶UB=IAR∶IBR=1∶4.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120734128794.png)
所以PA∶PB=IA2R∶IB2R=1∶16;
UA∶UB=IAR∶IBR=1∶4.
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目