同学给你个最详细最通俗的~串联电路电压规律：串联电路两端的总电压等于各用电器两端电压之和 即：U=U1+U2 U1∶U2∶U3=IR1∶IR2∶IR3=R1∶R2∶R3P1∶P2∶P3=I2R1∶I2R2∶I2R3=R1∶R2∶R3 串联电路的特点：...