i-U 100∠0° =4∠-53.13°A 25∠53.13 dR=Ri=60L-53.13Y U1=joL1=240Z36.87°V ie议i6w☑-188y 则i=4W2cos(5000t-53.3)A 4=60N2cos(50001-53.13)V 4,=240V2cos(50001+36.87)V uc=160W2cos(5000t-143.13)Vo o o o o o 100 0 4 53.13 A 25 53.13 60 53.13 V 240 36.87 V 1 160 143.13 V C eq R L C U I Z U R I U j L I U j I   • • • • • • • •  = = =  −  = ==  − = =  = − =  − 则 5000 5000 5000 5000 o o o o 4 2 cos 53.13 A ( ) 60 2 cos( 53.13 ) V 240 2 cos( 36.87 ) V 160 2 cos( 143.13 ) V R L C i t u t u t u t = − = − = + = −