Resistors in Parallel

• • Add the reciprocal of each resistor
  • Then take the reciprocal of the value


  How to calculate Rt of a parallel resistive circuit
• • 1/Rt = 1/45+1/90+1/30
  • 1/Rt = 0.022 + 0.011 + 0.033
  • 1/Rt = 0.066
  • 1/Rt = 1/0.066
  • Rt=15.15Ω
• • Rt = R1xR2 / R1+R2

  How to calculate the Rt with only 2 resistors in parallel
• In a parallel connected circuit, the Rt is always going to be lower than the smallest resistor in the parallel circuit