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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 596 · 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 yellow, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89 Ω resistor? (a) white-grey-black (b) grey-white-black (c) grey-white-brown (d) white-white-black
  5. 5.🌈 A resistor has the colour bands grey, red, black. What is its value (in ohms)?
  6. 6.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
  7. 7.🌈 A resistor has the colour bands blue, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does white stand for?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 50 % (d) 25 %
  11. 11.🌈 In the resistor colour code, which number does blue stand for?
  12. 12.🌈 A resistor has the colour bands blue, brown, black. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) yellow-orange-black (b) orange-yellow-brown (c) orange-yellow-black (d) yellow-yellow-black
  14. 14.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7900 Ω resistor? (a) violet-white-orange (b) white-violet-red (c) violet-white-red (d) violet-white-brown
  16. 16.🌈 In the resistor colour code, which number does brown stand for?
  17. 17.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-orange (b) orange-red-orange (c) red-black-red (d) red-black-yellow
  19. 19.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 910 Ω resistor? (a) white-brown-red (b) white-brown-black (c) white-brown-brown (d) brown-white-brown
  21. 21.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
  22. 22.🌈 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
  23. 23.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands violet, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does violet stand for?
  26. 26.🌈 In the resistor colour code, which number does black stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83000 Ω resistor? (a) grey-orange-orange (b) grey-orange-yellow (c) orange-grey-orange (d) grey-orange-red
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70000 Ω resistor? (a) violet-black-yellow (b) violet-black-orange (c) grey-violet-orange (d) violet-black-red
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) blue-green-brown (b) green-blue-black (c) violet-green-black (d) blue-green-black
  30. 30.🌈 In the resistor colour code, which number does grey stand for?
  31. 31.🌈 A resistor has the colour bands green, violet, orange. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 560 Ω resistor? (a) green-blue-black (b) green-blue-red (c) blue-green-brown (d) green-blue-brown
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) red-brown-yellow (b) brown-red-orange (c) red-brown-orange (d) red-brown-red
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) blue-green-black (b) blue-black-black (c) green-black-black (d) green-black-brown
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96000 Ω resistor? (a) white-blue-yellow (b) white-blue-orange (c) white-blue-red (d) blue-white-orange
  36. 36.🌈 A resistor has the colour bands violet, orange, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands yellow, orange, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, grey, black. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4700 Ω resistor? (a) yellow-violet-red (b) violet-yellow-red (c) yellow-violet-orange (d) yellow-violet-brown
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 260 Ω resistor? (a) blue-red-brown (b) red-blue-red (c) red-blue-black (d) red-blue-brown

Answer key

  1. 440
  2. 220
  3. 63
  4. grey-white-black
  5. 82
  6. the one nearest an end
  7. 630
  8. 49
  9. 9
  10. 5 %
  11. 6
  12. 61
  13. orange-yellow-black
  14. 81
  15. violet-white-red
  16. 1
  17. 5100
  18. red-black-orange
  19. 34000
  20. white-brown-brown
  21. 15000
  22. blue-violet-orange
  23. 83
  24. 74
  25. 7
  26. 0
  27. grey-orange-orange
  28. violet-black-orange
  29. blue-green-black
  30. 8
  31. 57000
  32. green-blue-brown
  33. red-brown-orange
  34. green-black-black
  35. white-blue-orange
  36. 73000
  37. 4300
  38. 48
  39. yellow-violet-red
  40. red-blue-brown

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