Electronics
🔌 Parallel Resistor Calculator
Online parallel resistor calculator with multi-resistor support, current analysis, and reverse calculation
🔁 Reverse: Find R2 for Target Resistance
Total Parallel Resistance
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Parallel Resistor Formula
1/Rtotal = 1/R₁ + 1/R₂ + ... + 1/Rn
Two resistors: Rtotal = (R₁ × R₂) / (R₁ + R₂)
Key Properties
- Total resistance is always less than the smallest resistor
- Voltage is identical across all branches
- Total current equals sum of branch currents
- Smaller resistor carries more current