us=200√2 sinwt V,R1=1Ω, R2=3Ω, L1=1H, C1=1μF,C2=250μF:已知电路中i1为零,us与电流i同相位,求:(1)L2 (2)ic1(C1所在电路电流)急用,谢啦!!!!!!给出的解答详细追加分