2.3电阻的串联和并联 电阻串联( Series connection of resistors) R R R eu --[-— 等效 ∑ 串联电路的总电阻 k=∑Rk等于各分电阻之和2.3 电阻的串联和并联 等效 + _ R1 Rn + _ i + uk _ u1 + _ un u Rk + u _ Req i 一、 电阻串联 ( Series Connection of Resistors ) =   = = k k eq R i u i u R 串联电路的总电阻 等于各分电阻之和