Lesson: Chapter 19 — Current Electricity

19.7. Resistors in series 3 of 4 Reset answers

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Question 3

A 10 Ω resistor and a 2 Ω resistor are connected in series. What is the equivalent resistance?

A 5 Ω B 8 Ω C 20 Ω D 12 Ω

The right answer is the one marked above.

12 Ω. In series the resistances simply add: 10 + 2 = 12 Ω.

A useful check: a series total is always bigger than the biggest resistor in the set. Anything smaller than 10 Ω here would be wrong.

Answer the question to continue.