2.RLC申联电路 R R jOL ++L L U U R u U U oC 由KⅥL:U=+1+i=Ri+ joLI-j-1 OC R+f(0L-1 DI=R+j(XL+Roll=(R+jX)I R+joL-j=R+=Z∠ Oc2. RLC串联电路 由KVL： . 1 j . j . . . . . I C U UR UL UC R I LI  = + + = +  − I R j X X I C R j L L C   )] [ ( )] 1 [ ( = + +  = +  − R jX I  = ( + ) L C R u uL uC i + - + - + - + uR -   = = +  − = R+ jX = Z  C R j L j I U Z 1   . I j L . U U L . U C . jωC 1 R + - + - + - + U R-