Advanced Resistor Calculator

Calculation Result:

0 Ω

Series Resistor Calculation

In a series circuit, the total resistance is the sum of all individual resistances:

Rtotal = R1 + R2 + R3 + ...

Example with three resistors (10Ω, 20Ω, 30Ω) in series:

Rtotal = 10Ω + 20Ω + 30Ω = 60Ω

Parallel Resistor Calculation

In a parallel circuit, total resistance is calculated using reciprocal formula:

1/Rtotal = 1/R1 + 1/R2 + 1/R3 + ...

Example with three resistors (10Ω, 20Ω, 30Ω) in parallel:

1/Rtotal = 1/10 + 1/20 + 1/30 = 0.1 + 0.05 + 0.033 ≈ 0.183
Rtotal ≈ 1/0.183 ≈ 5.46Ω

Key Differences

Series: Rtotal > All individual resistors
Parallel: Rtotal < Smallest individual resistor