DC circuitsQuestion 1342 of 1506

Three resistors of 5 Ω, 8 Ω and 12 Ω are connected in series. What is the total resistance?

  1. 17.0 Ω
  2. 8.33 Ω
  3. 20.0 Ω
  4. 25.0 Ω
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Correct answer: 25.0 Ω

In series the resistances add: 5 + 8 + 12 = 25.0 Ω.

Source: Computed, 5.2: Simple Series Circuits

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Questions last reviewed: 18 October 2026