Series and parallel resistor calculator

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Result

Equivalent resistance103.1 Ω

Step-by-step solution

Parallel: add the conductances

1/R_eq = 1/220 + 1/330 + 1/470 = 0.009703 S

R_eq = 1/0.009703 = 103.1 Ω

Key formulas

Resistors in series: R_eq = R₁ + R₂ + …
Resistors in parallel: 1/R_eq = 1/R₁ + 1/R₂ + …
Two in parallel: R_eq = R₁R₂ / (R₁ + R₂)
Ohm's law: V = I·R
Power: P = V·I = I²R = V²/R

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