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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 411 · 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 violet stand for?
  2. 2.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands red, white, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 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
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 310 Ω resistor? (a) brown-orange-brown (b) orange-brown-brown (c) orange-brown-red (d) orange-brown-black
  7. 7.🌈 In the resistor colour code, which number does orange stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) white-grey-orange (b) grey-black-yellow (c) grey-black-red (d) grey-black-orange
  9. 9.🌈 In the resistor colour code, which number does white stand for?
  10. 10.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8500 Ω resistor? (a) grey-green-red (b) grey-green-brown (c) green-grey-red (d) grey-green-orange
  12. 12.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82000 Ω resistor? (a) grey-red-red (b) grey-red-yellow (c) red-grey-orange (d) grey-red-orange
  14. 14.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 470 Ω resistor? (a) yellow-violet-black (b) yellow-violet-brown (c) violet-yellow-brown (d) yellow-violet-red
  16. 16.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands violet, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45000 Ω resistor? (a) yellow-green-red (b) yellow-green-yellow (c) green-yellow-orange (d) yellow-green-orange
  20. 20.🌈 In the resistor colour code, which number does green stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 480 Ω resistor? (a) yellow-grey-brown (b) yellow-grey-red (c) grey-yellow-brown (d) yellow-grey-black
  22. 22.🌈 A resistor has the colour bands white, green, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 In the resistor colour code, which number does blue stand for?
  24. 24.🌈 In the resistor colour code, which number does grey stand for?
  25. 25.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands green, grey, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands grey, blue, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands orange, red, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands orange, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64 Ω resistor? (a) violet-yellow-black (b) blue-yellow-brown (c) blue-yellow-black (d) yellow-blue-black
  33. 33.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does black stand for?
  35. 35.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands violet, blue, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3800 Ω resistor? (a) orange-grey-brown (b) orange-grey-orange (c) orange-grey-red (d) grey-orange-red
  39. 39.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?

Answer key

  1. 7
  2. 430
  3. 2.9
  4. the one nearest an end
  5. 5 %
  6. orange-brown-brown
  7. 3
  8. grey-black-orange
  9. 9
  10. 4.8
  11. grey-green-red
  12. 6400
  13. grey-red-orange
  14. 9.8
  15. yellow-violet-brown
  16. 50
  17. 7.2
  18. 770
  19. yellow-green-orange
  20. 5
  21. yellow-grey-brown
  22. 95
  23. 6
  24. 8
  25. 91
  26. 6.3
  27. 58
  28. 3600
  29. 86000
  30. 32
  31. 330
  32. blue-yellow-black
  33. 18
  34. 0
  35. 41
  36. 350
  37. 76
  38. orange-grey-red
  39. 39000
  40. 40

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