Calculateur de Circuit Parallèle — Formule
## Parallel Resistor Calculation
Parallel resistors share the same voltage. The equivalent is always less than the smallest.
### Formula
**1/R_eq = 1/R1 + 1/R2**
Or: **R_eq = (R1 x R2) / (R1 + R2)**
Branch currents: **I_n = V / R_n**.
Parallel resistors share the same voltage. The equivalent is always less than the smallest.
### Formula
**1/R_eq = 1/R1 + 1/R2**
Or: **R_eq = (R1 x R2) / (R1 + R2)**
Branch currents: **I_n = V / R_n**.
Exemple Résolu
12 V supply with R1 = 100 and R2 = 200 ohms in parallel.
- R_eq = 1 / (1/100 + 1/200) = 66.67 ohms
- Total current = 12 / 66.67 = 0.18 A
- I_R1 = 12 / 100 = 0.12 A
- I_R2 = 12 / 200 = 0.06 A