Current Divider Formula

The following current divider equation is used to calculate the current moving through a resistor given the source current, total resistance of resistors, and resistance of the individual resistance.


What is a current divider?

A current divider is a circuit consisting of a source current and two or more resistors that cause the current to be divided between each resistance based on their resistance.


Formula Text

IR = IS * R / Rtotal

  • Where IR is the current through the current resistor (amps)
  • IS is the source current (amps)
  • Rtotal is the total of all the resistors in the series (ohms)
  • R is the resistance of the individual resistor (ohms)

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