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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 2 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27 Ω resistor? (a) red-violet-brown (b) red-violet-black (c) violet-red-black (d) orange-violet-black
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3600 Ω resistor? (a) orange-blue-orange (b) blue-orange-red (c) orange-blue-brown (d) orange-blue-red
  4. 4.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the widest gap (d) the gold band
  5. 5.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands grey, green, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) white-brown-black (b) grey-brown-black (c) grey-brown-brown (d) brown-grey-black
  8. 8.🌈 A resistor has the colour bands violet, grey, orange. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) grey-brown-black (b) brown-grey-black (c) red-grey-black (d) brown-grey-brown
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 410 Ω resistor? (a) brown-yellow-brown (b) yellow-brown-brown (c) yellow-brown-red (d) yellow-brown-black
  11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  12. 12.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does green stand for?
  15. 15.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53 Ω resistor? (a) green-orange-brown (b) orange-green-black (c) blue-orange-black (d) green-orange-black
  25. 25.🌈 In the resistor colour code, which number does red stand for?
  26. 26.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  30. 30.🌈 In the resistor colour code, which number does black stand for?
  31. 31.🌈 A resistor has the colour bands yellow, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 790 Ω resistor? (a) white-violet-brown (b) violet-white-brown (c) violet-white-black (d) violet-white-red
  33. 33.🌈 In the resistor colour code, which number does brown stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) green-red-black (b) red-yellow-black (c) yellow-red-black (d) yellow-red-brown
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) yellow-black-black (b) orange-black-black (c) yellow-orange-black (d) orange-black-brown
  36. 36.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) blue-brown-red (b) blue-brown-yellow (c) blue-brown-orange (d) brown-blue-orange
  38. 38.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands orange, blue, black. What is its value (in ohms)?

Answer key

  1. 7
  2. red-violet-black
  3. orange-blue-red
  4. the one nearest an end
  5. 14
  6. 85
  7. grey-brown-black
  8. 78000
  9. brown-grey-black
  10. yellow-brown-brown
  11. 5 %
  12. 240
  13. 23
  14. 5
  15. 67
  16. 30000
  17. 970
  18. 16
  19. 690
  20. 200
  21. 27
  22. 4.2
  23. 64
  24. green-orange-black
  25. 2
  26. 5.8
  27. 86
  28. 840
  29. 5100
  30. 0
  31. 460
  32. violet-white-brown
  33. 1
  34. yellow-red-black
  35. orange-black-black
  36. 12
  37. blue-brown-orange
  38. 84
  39. 950
  40. 36

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