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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 460 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🌈 In the resistor colour code, which number does brown stand for?
  2. 2.🌈 In the resistor colour code, which number does red stand for?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-black (b) red-red-brown (c) red-red-red (d) red-orange-brown
  4. 4.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 100 Ω resistor? (a) red-brown-brown (b) brown-black-brown (c) brown-black-red (d) brown-black-black
  7. 7.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) green-grey-black (b) yellow-grey-brown (c) grey-yellow-black (d) yellow-grey-black
  9. 9.🌈 A resistor has the colour bands grey, red, black. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does white stand for?
  11. 11.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does blue stand for?
  14. 14.🌈 In the resistor colour code, which number does green stand for?
  15. 15.🌈 A resistor has the colour bands yellow, violet, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) red-black-red (b) orange-red-brown (c) red-black-brown (d) red-black-black
  21. 21.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does black stand for?
  23. 23.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands orange, red, brown. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 790 Ω resistor? (a) violet-white-black (b) white-violet-brown (c) violet-white-brown (d) violet-white-red
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-black (b) orange-brown-brown (c) brown-orange-black (d) yellow-brown-black
  28. 28.🌈 A resistor has the colour bands violet, blue, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands orange, yellow, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91 Ω resistor? (a) brown-white-black (b) brown-brown-black (c) white-brown-black (d) white-brown-brown
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5600 Ω resistor? (a) green-blue-brown (b) green-blue-red (c) green-blue-orange (d) blue-green-red
  35. 35.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86 Ω resistor? (a) grey-blue-brown (b) blue-grey-black (c) white-blue-black (d) grey-blue-black
  38. 38.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  39. 39.🌈 In the resistor colour code, which number does violet stand for?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 740 Ω resistor? (a) violet-yellow-red (b) violet-yellow-brown (c) yellow-violet-brown (d) violet-yellow-black

Answer key

  1. 1
  2. 2
  3. red-red-brown
  4. 60000
  5. 5 %
  6. brown-black-brown
  7. the one nearest an end
  8. yellow-grey-black
  9. 82
  10. 9
  11. 7800
  12. 2000
  13. 6
  14. 5
  15. 47
  16. 47
  17. 820
  18. 820
  19. 4200
  20. red-black-brown
  21. 540
  22. 0
  23. 920
  24. 92
  25. 320
  26. violet-white-brown
  27. orange-brown-black
  28. 76000
  29. 340
  30. 430
  31. 42
  32. 290
  33. white-brown-black
  34. green-blue-red
  35. 41
  36. 43
  37. grey-blue-black
  38. 96
  39. 7
  40. violet-yellow-brown

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