Lesson: Chapter 19 — Current Electricity

19.6. Resistors 4 of 7 Reset answers

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Question 4

A resistor’s first three bands are brown, black and red. What is its value?

A 1000 Ω B 10 Ω C 100 Ω D 102 Ω

The right answer is the one marked above.

1000 Ω. Brown = 1 and black = 0, giving 10. Red on the third band means multiply by 10², so 10 × 100 = 1000 Ω.

102 Ω is what you get by writing the three digits side by side. The third band is not a digit — it is a multiplier.

Answer the question to continue.