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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 711 · 40 questions
TalentJR

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.

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  1. 1.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 5 % (d) 0 %
  3. 3.🌈 In the resistor colour code, which number does violet stand for?
  4. 4.🌈 In the resistor colour code, which number does orange stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) blue-violet-brown (b) violet-blue-red (c) violet-blue-black (d) violet-blue-brown
  6. 6.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  9. 9.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does white stand for?
  12. 12.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) brown-red-black (b) red-brown-black (c) brown-red-brown (d) red-red-black
  16. 16.🌈 A resistor has the colour bands violet, yellow, red. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands violet, brown, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands white, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) red-violet-yellow (b) red-violet-orange (c) violet-red-orange (d) red-violet-red
  20. 20.🌈 In the resistor colour code, which number does blue stand for?
  21. 21.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands yellow, orange, orange. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does brown stand for?
  25. 25.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-red (b) red-red-brown (c) red-red-black (d) red-orange-brown
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) blue-brown-yellow (b) blue-brown-red (c) brown-blue-orange (d) blue-brown-orange
  28. 28.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 160 Ω resistor? (a) blue-brown-brown (b) brown-blue-brown (c) brown-blue-black (d) brown-blue-red
  30. 30.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 In the resistor colour code, which number does green stand for?
  33. 33.🌈 A resistor has the colour bands white, blue, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands green, violet, orange. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14000 Ω resistor? (a) brown-yellow-red (b) yellow-brown-orange (c) brown-yellow-yellow (d) brown-yellow-orange
  37. 37.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2400 Ω resistor? (a) yellow-red-red (b) red-yellow-brown (c) red-yellow-red (d) red-yellow-orange
  40. 40.🌈 In the resistor colour code, which number does black stand for?

Answer key

  1. 7.8
  2. 5 %
  3. 7
  4. 3
  5. violet-blue-brown
  6. 490
  7. 950
  8. the one nearest an end
  9. 1.1
  10. 54
  11. 9
  12. 72000
  13. 800
  14. 9.7
  15. brown-red-black
  16. 7400
  17. 71
  18. 980
  19. red-violet-orange
  20. 6
  21. 62000
  22. 2.6
  23. 43000
  24. 1
  25. 94
  26. red-red-brown
  27. blue-brown-orange
  28. 3.4
  29. brown-blue-brown
  30. 38000
  31. 6.5
  32. 5
  33. 96
  34. 83
  35. 57000
  36. brown-yellow-orange
  37. 8100
  38. 66
  39. red-yellow-red
  40. 0

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