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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 328 · 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 black 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 63000 Ω resistor? (a) blue-orange-orange (b) orange-blue-orange (c) blue-orange-red (d) blue-orange-yellow
  4. 4.🌈 A resistor has the colour bands violet, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands green, yellow, red. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) green-brown-red (b) green-brown-orange (c) brown-green-orange (d) green-brown-yellow
  8. 8.🌈 In the resistor colour code, which number does violet stand for?
  9. 9.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  10. 10.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
  11. 11.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31000 Ω resistor? (a) orange-brown-yellow (b) orange-brown-orange (c) brown-orange-orange (d) orange-brown-red
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) red-violet-yellow (b) violet-red-orange (c) red-violet-red (d) red-violet-orange
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 240 Ω resistor? (a) red-yellow-red (b) red-yellow-brown (c) red-yellow-black (d) yellow-red-brown
  15. 15.🌈 A resistor has the colour bands violet, brown, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands yellow, green, black. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) green-black-yellow (b) blue-green-orange (c) green-black-orange (d) green-black-red
  18. 18.🌈 In the resistor colour code, which number does orange stand for?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) green-grey-black (b) grey-green-black (c) blue-grey-black (d) green-grey-brown
  20. 20.🌈 A resistor has the colour bands violet, green, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) violet-grey-orange (b) violet-grey-red (c) grey-violet-red (d) violet-grey-brown
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) brown-yellow-orange (b) yellow-brown-orange (c) yellow-brown-red (d) yellow-brown-yellow
  24. 24.🌈 A resistor has the colour bands green, white, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  26. 26.🌈 In the resistor colour code, which number does yellow stand for?
  27. 27.🌈 A resistor has the colour bands yellow, white, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 In the resistor colour code, which number does white stand for?
  29. 29.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24000 Ω resistor? (a) red-yellow-red (b) red-yellow-orange (c) red-yellow-yellow (d) yellow-red-orange
  31. 31.🌈 A resistor has the colour bands grey, white, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74 Ω resistor? (a) violet-yellow-black (b) yellow-violet-black (c) grey-yellow-black (d) violet-yellow-brown
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 690 Ω resistor? (a) white-blue-brown (b) blue-white-black (c) blue-white-brown (d) blue-white-red
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) brown-violet-black (b) violet-brown-brown (c) brown-violet-red (d) brown-violet-brown
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) grey-yellow-red (b) yellow-grey-red (c) yellow-grey-orange (d) yellow-grey-brown
  36. 36.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands blue, black, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 0
  2. 2
  3. blue-orange-orange
  4. 74
  5. 5400
  6. 840
  7. green-brown-orange
  8. 7
  9. 29
  10. the one nearest an end
  11. 120
  12. orange-brown-orange
  13. red-violet-orange
  14. red-yellow-brown
  15. 71
  16. 45
  17. green-black-orange
  18. 3
  19. green-grey-black
  20. 7.5
  21. 5 %
  22. violet-grey-red
  23. yellow-brown-orange
  24. 59000
  25. 53
  26. 4
  27. 4.9
  28. 9
  29. 800
  30. red-yellow-orange
  31. 89
  32. violet-yellow-black
  33. blue-white-brown
  34. brown-violet-brown
  35. yellow-grey-red
  36. 52
  37. 6000
  38. 9.6
  39. 79
  40. 4.2

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