DC circuitsQuestion 691 of 1506

Which resistance ratio is used in the current divider formula to find a branch current?

  1. Branch resistance divided by total resistance
  2. Total resistance divided by the total current of the circuit
  3. Total resistance over branch resistance
  4. Branch resistance divided by the source voltage
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Correct answer: Total resistance over branch resistance

Total resistance in a parallel circuit is less than any branch, so the ratio must be total over branch to stay less than one.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 6.3: Current Divider Circuits and the Current Divider Formula

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Questions last reviewed: 18 October 2026