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Series Resistance Calculator

Total resistance of resistors connected in series, plus current and power for a supply voltage.

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Add two to ten series resistors and see the total and the current drawn.

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Assumptions and limits.
  • Ideal series connection, no parallel paths.

Series resistances add

R_total = R1 + R2 + … and the same current flows through every element.

Frequently asked questions

Why does one failed resistor stop the circuit?
A series path has no alternative route, so an open element interrupts current everywhere.
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