Parallel circuit rules


  • Components in a parallel circuit share the same voltage. Etotal = E1 = E2 = . . . En
  • Total resistance in a parallel circuit is less than any of the individual resistances. Rtotal = 1 / (1/R1 + 1/R2 + . . . 1/Rn)
  • Total current in a parallel circuit is equal to the sum of the individual branch currents. Itotal = I1 + I2 + . . . In