1.對直流電而言電容C相當於斷路 , 從 (2||4) =
= 4/3, [2 + (2||4)]||2 = 5/4 (Ω), 可分壓得 V 1 = 5* ( 5/ 4 ) / ( 2 + ( 5/ 4 ) ) = 2 5/ 1 3( V ) , Va b = ( 25 / 1 3) * ( 4 / 3) / ( 2+ ( 4 / 3 ) ) = 1 0/ 1 3 ( V )
= 4/3, [2 + (2||4)]||2 = 5/4 (Ω), 可分壓得 V 1 = 5* ( 5/ 4 ) / ( 2 + ( 5/ 4 ) ) = 2 5/ 1 3( V ) , Va b = ( 25 / 1 3) * ( 4 / 3) / ( 2+ ( 4 / 3 ) ) = 1 0/ 1 3 ( V )