U 5∠60° 0.149∠-3.4°A 33.54∠63.4° UR=RI=15×0.149∠-3.4°=2.235∠-3.4°V UL=joI=56.5290×0.1492-3.4=842∠864V UC=jI=26.5∠-90×0.149∠-3.4=3.952-93.4V 则=0.149√2si(ot-3.°)A U ua=2235√2sin(t-34)V U n1=8.42√2si(Ot+866°)V 3.4° 9 uc=3.95v2 sin(at-93.40)V 注U1=842>U=5,分电压大于总电压。相量图0.149 3.4 A 3 3.5 4 6 3.4 5 6 0 o o o =  −   = = Z U I   则 i = 0.149 2 sin(ωt − 3.4 o ) A UL=8.42>U=5，分电压大于总电压。 U  UL  UC  I UR    -3.4° 相量图 15 0.149 3.4 2.235 3.4 V o o U  R = RI  =   − =  − j 5 6.5 9 0 0.149 3.4 8.4 2 8 6.4 V o o o U L = LI  =    − =  2 6.5 9 0 0.149 3.4 3.9 5 9 3.4 V C 1 j o o o U C = I  =  −   − =  −  V o u = 2.235 2 sin(ω t − 3.4 ) R V o u = 8.42 2 sin(ω t + 86.6 ) L V o u = 3.95 2 sin(ω t −93.4 ) C 注