并联阻抗 Z2 = R2//(-jXc) = 200( -j200)/( 200 - j200 ) = 100 - j100 = 100√2∠-45°Ω总电流 I = U2/Z2 =100∠60°/(100√2∠-45°) =∠105°/√2 A;总阻抗 Z =R1 +XL +Z2 = 200 +j200 + 100 - j100 = 100( 3 + j ) =100√10∠18.435° Ω总电压 U =IZ = ( ∠105°/√2 )(100√10∠18.435° ) =100√5∠123.435°V 。