Free online Resistor Calculator for fast, accurate resistor calculations, ready whenever you need it.
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For resistors in series, total resistance is simply R₁ + R₂. For resistors in parallel, this calculator uses (R₁ × R₂) ÷ (R₁ + R₂) — the standard formulas for combining resistances depending on how the resistors are wired.
Free online Resistor Calculator for fast, accurate resistor calculations, ready whenever you need it.
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