Lesson: Chapter 19 — Current Electricity

19.7. Resistors in series 4 of 4 Reset answers

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Question 4

A 10 Ω and a 2 Ω resistor in series are connected to a 6 V supply. What current flows through the circuit?

A 0.6 A B 3 A C 0.5 A D 2 A

The right answer is the one marked above.

0.5 A. The equivalent resistance is 12 Ω, so I = V ÷ R = 6 ÷ 12 = 0.5 A.

0.6 A is what you get by dividing 6 by 10 — using one resistor instead of the pair. The 6 V is across both, so it must be divided by both.

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