Lesson: Chapter 19 — Current Electricity

19.4. Ohm's law 7 of 7 Reset answers

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Question 7

A nichrome coil of resistance 6 Ω is connected to a 3 V supply. What current flows through it? (Exercise 19.2, part 3)

A 2 A B 18 A C 0.5 A D 9 A

The right answer is the one marked above.

0.5 A. I = V ÷ R = 3 ÷ 6 = 0.5 A.

2 A is what you get by dividing the wrong way round, 6 ÷ 3. Check which quantity the question gave you and which it wants before dividing.

Answer the question to continue.