Resistors in Series & Parallel Calculator
Find the total resistance of resistors wired in series or in parallel.
Total resistance (parallel)
5 Ω
- If wired in series
- 20 Ω
- Resistors
- 2
Show the work
Add the reciprocals
1 ÷ R = 1 ÷ R1 + 1 ÷ R2 + …
1 ÷ 10 + 1 ÷ 10 = 0.2
Flip the sum
R = 1 ÷ (sum)
1 ÷ 0.2 = 5 Ω
How it works
Series: R = R₁ + R₂ + … · Parallel: 1/R = 1/R₁ + 1/R₂ + …
Questions
- How does the resistors in series & parallel calculator work?
- Series: R = R₁ + R₂ + … · Parallel: 1/R = 1/R₁ + 1/R₂ + ….
- What do I need to enter?
- Resistances, Unit, Connected in. Optional fields can be left blank.
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