求电流

核心提示1、IR=220/(根号2xR)=7.07A,iR=10sin(wt+20)A,IL=220/(根号2xXL)=14.14A,iL=20sin(wt-70)A,IC=220/(根号2xXc)=7.07A,ic=10sin(wt+110)A,

1、IR=220/(根号2xR)=7.07A,iR=10sin(wt+20)A,

IL=220/(根号2xXL)=14.14A,iL=20sin(wt-70)A,

IC=220/(根号2xXc)=7.07A,ic=10sin(wt+110)A,

总电流I=IR+IL+IC=10A,i=14.14sin(wt-25)A

2、功率因数cose=cos45=0.707,

有功功率P=7.07平方x22=1100W,

无功功率Q=220/根号2x10xsin45=1100var。

 
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