A.XL=XC,總阻抗|Z|=R B.電源電壓U=UR C.電流I=U/R D.電源電壓U=UR+UL+UC
A.U=2UR B.U<UR C.U=UR D.U>UR
A.15.7/0.8 B.22/0.8 C.15.7/0.6 D.22/0.6