5∠60° 0.149∠-340A Z33.54∠63.4° UR=RI=15×0.149∠-3.4°=2.235∠-3.4°V U=joLI=565490×0.1494-34°=842∠866V =265∠90×0.149∠-340=3.95∠-934°V O0 则i=0.149√2cos(ot-34)A l2=2235√2cos(0t-34°)V 8.42√2cos(ot+866°)V u=3.95v2cos(at-93.4)V 返回上页‖下页0.149 3.4 A 33.54 63.4 5 60 o o o = ∠ − ∠ ∠ = = Z U I & & 则 i = 0.149 2cos(ωt − 3.4o ) A 15 0.149 3.4 2.235 3.4 V o o U & R = R I & = × ∠ − = ∠ − j 56.5 90 0.149 3.4 8.42 86.6 V o o o U & L = ωLI & = ∠ × ∠ − = ∠ 26.5 90 0.149 3.4 3.95 93.4 V C 1 j o o o U& C = − I& = ∠− × ∠− = ∠− ω 2.235 2cos( 3.4 ) V o uR = ω t − 8.42 2cos( 86.6 ) V o uL = ω t + 3.95 2cos( 93.4 ) V o uC = ω t − 返 回 上 页 下 页