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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 742 · 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 red, blue, red. What is its value (in ohms)?
  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.🌈 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
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) green-green-black (b) yellow-green-black (c) yellow-green-brown (d) green-yellow-black
  5. 5.🌈 A resistor has the colour bands brown, orange, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does orange stand for?
  8. 8.🌈 In the resistor colour code, which number does white stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) brown-violet-brown (b) violet-brown-brown (c) brown-violet-red (d) brown-violet-black
  10. 10.🌈 In the resistor colour code, which number does brown stand for?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75000 Ω resistor? (a) violet-green-red (b) green-violet-orange (c) violet-green-yellow (d) violet-green-orange
  12. 12.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands blue, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 890 Ω resistor? (a) white-grey-brown (b) grey-white-black (c) grey-white-red (d) grey-white-brown
  17. 17.🌈 In the resistor colour code, which number does grey stand for?
  18. 18.🌈 In the resistor colour code, which number does green stand for?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 450 Ω resistor? (a) yellow-green-brown (b) yellow-green-black (c) green-yellow-brown (d) yellow-green-red
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) yellow-red-black (b) yellow-red-brown (c) red-yellow-brown (d) yellow-red-red
  21. 21.🌈 A resistor has the colour bands grey, green, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) brown-yellow-red (b) brown-yellow-brown (c) yellow-brown-brown (d) brown-yellow-black
  23. 23.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38000 Ω resistor? (a) orange-grey-yellow (b) grey-orange-orange (c) orange-grey-orange (d) orange-grey-red
  25. 25.🌈 A resistor has the colour bands grey, red, brown. 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 grey, white, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands blue, green, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands violet, brown, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64000 Ω resistor? (a) yellow-blue-orange (b) blue-yellow-orange (c) blue-yellow-red (d) blue-yellow-yellow
  31. 31.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands violet, orange, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92 Ω resistor? (a) brown-red-black (b) white-red-black (c) red-white-black (d) white-red-brown
  34. 34.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) brown-grey-brown (b) red-grey-black (c) brown-grey-black (d) grey-brown-black
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) red-orange-black (b) orange-orange-black (c) red-orange-brown (d) orange-red-black
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68 Ω resistor? (a) violet-grey-black (b) blue-grey-black (c) grey-blue-black (d) blue-grey-brown
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) blue-red-brown (b) blue-red-orange (c) red-blue-red (d) blue-red-red
  40. 40.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?

Answer key

  1. 2600
  2. 5 %
  3. the one nearest an end
  4. yellow-green-black
  5. 13000
  6. 2.3
  7. 3
  8. 9
  9. brown-violet-brown
  10. 1
  11. violet-green-orange
  12. 80000
  13. 79
  14. 640
  15. 1.7
  16. grey-white-brown
  17. 8
  18. 5
  19. yellow-green-brown
  20. yellow-red-brown
  21. 85
  22. brown-yellow-brown
  23. 580
  24. orange-grey-orange
  25. 820
  26. 4
  27. 89
  28. 65
  29. 71
  30. blue-yellow-orange
  31. 53
  32. 73
  33. white-red-black
  34. 9.7
  35. 860
  36. brown-grey-black
  37. red-orange-black
  38. blue-grey-black
  39. blue-red-red
  40. 5700

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