Calculation
1/Rtotal = 1/R₁ + 1/R₂ + 1/R₃
Parallel branches increase conductance; equivalent resistance is below the smallest branch.
Kirchhoffsche Regeln
Resistors in parallel
Parallel branches increase conductance; equivalent resistance is below the smallest branch.
MINTSI
02
Result
Select a target and calculate.
Understand the inputs
- Total resistance Rtotal — Equivalent resistance of the parallel network.
- Branch resistance R₁ — Resistance of first parallel branch.
- Branch resistance R₂ — Resistance of second parallel branch.
- Branch resistance R₃ — Optional third branch; 0 means disconnected.
Example
10 Ω in parallel with 5 Ω gives 3.33 Ω.
Assumptions and limits
Ideal ohmic branches; contacts and leads are excluded.
Sources