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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 584 · 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, orange, yellow. 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) 50 % (b) 25 % (c) 0 % (d) 5 %
  3. 3.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) brown-red-red (b) red-brown-orange (c) red-brown-brown (d) red-brown-red
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-brown (b) grey-violet-black (c) grey-violet-red (d) violet-grey-brown
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) yellow-red-brown (b) red-yellow-black (c) green-red-black (d) yellow-red-black
  7. 7.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does violet stand for?
  10. 10.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does black stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71 Ω resistor? (a) violet-brown-black (b) brown-violet-black (c) violet-brown-brown (d) grey-brown-black
  13. 13.🌈 A resistor has the colour bands grey, violet, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8500 Ω resistor? (a) grey-green-brown (b) green-grey-red (c) grey-green-red (d) grey-green-orange
  15. 15.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) yellow-orange-orange (b) orange-black-red (c) orange-black-orange (d) orange-black-yellow
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) yellow-grey-black (b) orange-grey-black (c) orange-grey-brown (d) grey-orange-black
  18. 18.🌈 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
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22000 Ω resistor? (a) red-red-yellow (b) red-red-red (c) red-orange-orange (d) red-red-orange
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 720 Ω resistor? (a) violet-red-black (b) violet-red-red (c) red-violet-brown (d) violet-red-brown
  21. 21.🌈 In the resistor colour code, which number does green stand for?
  22. 22.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does yellow stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) grey-green-brown (b) green-grey-red (c) green-grey-black (d) green-grey-brown
  27. 27.🌈 A resistor has the colour bands yellow, grey, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, green, black. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) green-red-red (b) red-green-orange (c) red-green-brown (d) red-green-red
  30. 30.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 In the resistor colour code, which number does orange stand for?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6800 Ω resistor? (a) blue-grey-orange (b) blue-grey-red (c) blue-grey-brown (d) grey-blue-red
  34. 34.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91000 Ω resistor? (a) brown-white-orange (b) white-brown-red (c) white-brown-yellow (d) white-brown-orange
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 490 Ω resistor? (a) yellow-white-brown (b) yellow-white-red (c) white-yellow-brown (d) yellow-white-black
  37. 37.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67000 Ω resistor? (a) blue-violet-orange (b) violet-blue-orange (c) blue-violet-red (d) blue-violet-yellow
  40. 40.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 730
  2. 5 %
  3. 890
  4. red-brown-red
  5. grey-violet-brown
  6. yellow-red-black
  7. 56
  8. 1.6
  9. 7
  10. 200
  11. 0
  12. violet-brown-black
  13. 87
  14. grey-green-red
  15. 320
  16. orange-black-orange
  17. orange-grey-black
  18. the one nearest an end
  19. red-red-orange
  20. violet-red-brown
  21. 5
  22. 16
  23. 88
  24. 61000
  25. 4
  26. green-grey-brown
  27. 48
  28. 75
  29. red-green-red
  30. 41
  31. 50
  32. 3
  33. blue-grey-red
  34. 72
  35. white-brown-orange
  36. yellow-white-brown
  37. 82000
  38. 6.3
  39. blue-violet-orange
  40. 88

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