i= 5∠60° =0.149∠-3.4°A Z 33.54∠63.4° 0r=R1=15×0.149∠-3.4°=2.235∠-3.4°V 0z=joL1=56.5∠90°×0.149∠-3.4°=8.42∠86.4°V 0e=-j1i=26.5∠-90°x01492-34=395∠-93.4V C 则i=0.149W2cos(o1-3.4)A uR=2.235V2cos(0t-3.4)V 4,=8.42W2cos(ot+86.6)V -3.4° u=3.95W2cos(wt-93.4)V UR 注 U=8.42>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 cos(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  =    − =  26.5 90 0.149 3.4 3.95 93.4 V C 1 j o o o U C = − I  = −  − = −  2.235 2 cos( 3.4 ) V o uR = ω t − 8.42 2 cos( 86.6 ) V o uL = ω t + 3.95 2 cos( 93.4 ) V o uC = ω t − 注