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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 170 · 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.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  2. 2.🌈 In the resistor colour code, which number does white stand for?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92 Ω resistor? (a) red-white-black (b) white-red-black (c) white-red-brown (d) brown-red-black
  4. 4.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 46 Ω resistor? (a) blue-yellow-black (b) yellow-blue-black (c) green-blue-black (d) yellow-blue-brown
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 440 Ω resistor? (a) yellow-yellow-black (b) yellow-yellow-brown (c) yellow-green-brown (d) yellow-yellow-red
  7. 7.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands grey, white, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does brown stand for?
  10. 10.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  11. 11.🌈 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
  12. 12.🌈 In the resistor colour code, which number does blue stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70000 Ω resistor? (a) grey-violet-orange (b) violet-black-yellow (c) violet-black-red (d) violet-black-orange
  14. 14.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) yellow-black-brown (b) green-yellow-black (c) yellow-black-black (d) green-black-black
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) blue-green-orange (b) green-black-orange (c) green-black-red (d) green-black-yellow
  17. 17.🌈 In the resistor colour code, which number does violet stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) yellow-orange-black (b) yellow-yellow-black (c) orange-yellow-brown (d) orange-yellow-black
  19. 19.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-white-brown (b) white-white-red (c) white-white-orange (d) white-black-red
  21. 21.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 890 Ω resistor? (a) white-grey-brown (b) grey-white-black (c) grey-white-brown (d) grey-white-red
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-red (b) red-green-orange (c) green-red-red (d) red-green-brown
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) brown-grey-black (b) grey-brown-black (c) grey-brown-brown (d) white-brown-black
  25. 25.🌈 In the resistor colour code, which number does green stand for?
  26. 26.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48000 Ω resistor? (a) yellow-grey-orange (b) yellow-grey-red (c) yellow-grey-yellow (d) grey-yellow-orange
  30. 30.🌈 A resistor has the colour bands green, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does orange stand for?
  33. 33.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31000 Ω resistor? (a) brown-orange-orange (b) orange-brown-orange (c) orange-brown-red (d) orange-brown-yellow
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) violet-brown-red (b) violet-brown-brown (c) brown-violet-red (d) violet-brown-orange
  36. 36.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does yellow stand for?
  39. 39.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 920 Ω resistor? (a) white-red-black (b) red-white-brown (c) white-red-brown (d) white-red-red

Answer key

  1. 5 %
  2. 9
  3. white-red-black
  4. 200
  5. yellow-blue-black
  6. yellow-yellow-brown
  7. 83000
  8. 89
  9. 1
  10. 85000
  11. the one nearest an end
  12. 6
  13. violet-black-orange
  14. 8.6
  15. yellow-black-black
  16. green-black-orange
  17. 7
  18. orange-yellow-black
  19. 730
  20. white-white-red
  21. 9
  22. grey-white-brown
  23. red-green-red
  24. grey-brown-black
  25. 5
  26. 230
  27. 590
  28. 9200
  29. yellow-grey-orange
  30. 54
  31. 56
  32. 3
  33. 81
  34. orange-brown-orange
  35. violet-brown-red
  36. 6500
  37. 9100
  38. 4
  39. 8.4
  40. white-red-brown

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