换路后,电容电压不能突变,因此Uc(0+)=0,电容短路;电感电流不能突变,IL(0+)=0,电感开路.
因此t=0+时刻,等效电路图如下:
1、Uc(0+)=0V,电容短路、电感开路,所以Ic(0+)=U/(R1+R3)=10/(4+6)=1(A),IL(0+)=0A.
2、R2支路开路,所以I(0+)=Ic(0+)=1A.UL(0+)明显等于R3两端电压,所以UL(0+)=Ic(0+)×R3=1×6=6(V).
换路后,电容电压不能突变,因此Uc(0+)=0,电容短路;电感电流不能突变,IL(0+)=0,电感开路.
因此t=0+时刻,等效电路图如下:
1、Uc(0+)=0V,电容短路、电感开路,所以Ic(0+)=U/(R1+R3)=10/(4+6)=1(A),IL(0+)=0A.
2、R2支路开路,所以I(0+)=Ic(0+)=1A.UL(0+)明显等于R3两端电压,所以UL(0+)=Ic(0+)×R3=1×6=6(V).