Parallel Resistors Calculator
Two Resistors in Parallel
Three Resistors in Parallel
Formula
1/R_total = 1/R₁ + 1/R₂ + 1/R₃ + ..., or for two resistors: R_total = (R₁ × R₂)/(R₁ + R₂).
Frequently Asked Questions
How do resistors add in parallel?
Resistors in parallel add reciprocally: 1/R_total = 1/R₁ + 1/R₂ + ... The total resistance is always less than the smallest individual resistance.
Why is parallel resistance always less than the smallest resistor?
In parallel, each resistor provides an additional path for current to flow. More paths means more total current for the same voltage, which is equivalent to a lower total resistance.
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