Parallel Resistance Calculator

Calculate total resistance of resistors connected in parallel: 1/R_total = 1/R1 + 1/R2.

Ω
Ω

Total Resistance

66.6667 Ω

Total Resistance vs Resistor 1

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Formule

## Parallel Resistance Resistors in parallel share the same voltage, and the reciprocals of their resistances add. ### Formula **1/R_total = 1/R1 + 1/R2 + ...** For two resistors: **R_total = (R1 * R2) / (R1 + R2)** The total is always less than the smallest individual resistor.

Exemple Résolu

Two resistors in parallel: 100 Ω and 200 Ω.

  1. 011/R = 1/100 + 1/200 = 0.01 + 0.005 = 0.015
  2. 02R = 1 / 0.015 = 66.67 Ω
  3. 03Or: R = (100 * 200) / (100 + 200) = 20000 / 300 = 66.67 Ω