如题所述
R、L、C 相等,左边闭合回路相量图如下(考试不必画):
Uab = Uc
= 100 * cos45° ∠-45°
= 50√2 ∠-45°
Rab = 50 // (-j50) + j50
= 50 *(-j50)/ (50 - j50) + j50
= 25 - j25 + j50
= 25 + j25