DC circuitsQuestion 1343 of 1506

Three resistors of 12 Ω, 15 Ω and 50 Ω are connected in series. What is the total resistance?

  1. 65.0 Ω
  2. 77.0 Ω
  3. 5.88 Ω
  4. 62.0 Ω
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Correct answer: 77.0 Ω

In series the resistances add: 12 + 15 + 50 = 77.0 Ω.

Source: Computed, 5.2: Simple Series Circuits

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Questions last reviewed: 18 October 2026