How to Calculate Resistors in Parallel
Calculate total resistance for resistors connected in parallel.
The Formula
1/R = 1/R₁+1/R₂+1/R₃The resistors in parallel formula uses the mathematical relationship: 1/R = 1/R₁+1/R₂+1/R₃. Each variable in the formula represents a measurable quantity that affects the final result.
Step-by-Step Method
- 1Identify all input values needed for the resistors in parallel calculation.
- 2Substitute your known values into the formula: 1/R = 1/R₁+1/R₂+1/R₃.
- 3Perform the arithmetic operations in the correct order (PEMDAS/BODMAS).
- 4Check that your result has the correct units and is within a reasonable range.
- 5Verify using the interactive Resistors in Parallel to confirm your answer.
Related Topics
resistorsparallel circuitresistancephysics
Use the Interactive Calculator
Skip the manual math — get instant results with our free Resistors in Parallel calculator.