Electronics Worksheet: Resistor Colour Code
Remember (Digit, digit, zeros): black 0 · brown 1 · red 2 · orange 3 · yellow 4 · green 5 · blue 6 · violet 7 · grey 8 · white 9. Band 1 and band 2 = two digits; band 3 = number of zeros to add. Examples: brown-black-red = 1000 Ω; yellow-violet-brown = 470 Ω; red-red-red = 2200 Ω = 2.2 kΩ.
NameDateTime takenScore ___ / 40
- 1.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
- 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
- 3.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
- 4.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?
- 5.🌈 In the resistor colour code, which number does orange stand for?
- 6.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
- 7.🌈 In the resistor colour code, which number does blue stand for?
- 8.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
- 9.🌈 In the resistor colour code, which number does green stand for?
- 10.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
- 11.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
- 12.🌈 In the resistor colour code, which number does yellow stand for?
- 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1500 Ω resistor? (a) brown-green-orange (b) green-brown-red (c) brown-green-brown (d) brown-green-red
- 14.🌈 In the resistor colour code, which number does violet stand for?
- 15.🌈 In the resistor colour code, which number does black stand for?
- 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26000 Ω resistor? (a) red-blue-red (b) red-blue-yellow (c) blue-red-orange (d) red-blue-orange
- 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84000 Ω resistor? (a) grey-yellow-orange (b) grey-yellow-yellow (c) yellow-grey-orange (d) grey-yellow-red
- 18.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
- 19.🌈 In the resistor colour code, which number does brown stand for?
- 20.🌈 A resistor has the colour bands orange, yellow, black. What is its value (in ohms)?
- 21.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
- 22.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
- 23.🌈 A resistor has the colour bands blue, grey, orange. What is its value in kilo-ohms (kΩ)? =
- 24.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
- 25.🌈 A resistor has the colour bands blue, brown, black. What is its value (in ohms)?
- 26.🌈 A resistor has the colour bands grey, blue, orange. What is its value (in ohms)?
- 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38000 Ω resistor? (a) orange-grey-orange (b) orange-grey-red (c) grey-orange-orange (d) orange-grey-yellow
- 28.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
- 29.🌈 In the resistor colour code, which number does red stand for?
- 30.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
- 31.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
- 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57 Ω resistor? (a) violet-green-black (b) blue-violet-black (c) green-violet-black (d) green-violet-brown
- 33.🌈 A resistor has the colour bands orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
- 34.🌈 A resistor has the colour bands white, yellow, orange. What is its value in kilo-ohms (kΩ)? =
- 35.🌈 In the resistor colour code, which number does white stand for?
- 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 520 Ω resistor? (a) red-green-brown (b) green-red-red (c) green-red-brown (d) green-red-black
- 37.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
- 38.🌈 A resistor has the colour bands violet, blue, brown. What is its value (in ohms)?
- 39.🌈 A resistor has the colour bands violet, orange, red. What is its value in kilo-ohms (kΩ)? =
- 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) red-brown-red (b) brown-red-orange (c) red-brown-yellow (d) red-brown-orange
Answer key
- the one nearest an end
- 5 %
- 1.5
- 94000
- 3
- 11
- 6
- 41
- 5
- 890
- 6100
- 4
- brown-green-red
- 7
- 0
- red-blue-orange
- grey-yellow-orange
- 84
- 1
- 34
- 490
- 290
- 68
- 38
- 61
- 86000
- orange-grey-orange
- 590
- 2
- 950
- 8200
- green-violet-black
- 34
- 94
- 9
- green-red-brown
- 83
- 760
- 7.3
- red-brown-orange
Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids