QUIZQuiz · #2EP.69 · 24 s

Quiz: brown-black-red-gold, what value is this resistor?

// QUIZ · PICK YOUR ANSWER

Brown, black, red, gold — what value is this resistor?

// LESSON NOTES

✅ It's B — 1 kΩ!

1️⃣ BANDS 1 + 2 ARE DIGITS: brown = 1, black = 0 → 10.

2️⃣ BAND 3 COUNTS THE ZEROS: red = 2 → add two zeros → 1000 Ω = 1 kΩ.

3️⃣ BAND 4 IS THE TOLERANCE: gold = ±5 %, so the real value can be anywhere from 950 to 1050 Ω.

Colour code: black 0 · brown 1 · red 2 · orange 3 · yellow 4 · green 5 · blue 6 · violet 7 · grey 8 · white 9.

Read the voiceover (transcript)

What value is this resistor?
Brown, black, red, gold. A, B, C, or D? Comment your answer!
It's B, one kilo-ohm! Brown is one, black is zero. That's ten.
The third band counts zeros. Red adds two: one thousand ohms. Gold: five percent.
Third band? Count the zeros!
Next quiz: which bulb saves power? Follow for more!