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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 258 · 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, green, red. What is its value (in ohms)?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  3. 3.🌈 In the resistor colour code, which number does green stand for?
  4. 4.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  5. 5.🌈 In the resistor colour code, which number does blue stand for?
  6. 6.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands green, white, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands red, grey, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-red (c) red-orange-yellow (d) red-orange-orange
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) yellow-grey-black (b) grey-yellow-brown (c) white-yellow-black (d) grey-yellow-black
  11. 11.🌈 A resistor has the colour bands green, brown, orange. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands grey, violet, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands green, white, orange. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 890 Ω resistor? (a) grey-white-brown (b) white-grey-brown (c) grey-white-red (d) grey-white-black
  16. 16.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands brown, green, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands white, orange, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68 Ω resistor? (a) blue-grey-brown (b) violet-grey-black (c) blue-grey-black (d) grey-blue-black
  22. 22.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) yellow-grey-brown (b) grey-yellow-red (c) yellow-grey-orange (d) yellow-grey-red
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6700 Ω resistor? (a) violet-blue-red (b) blue-violet-brown (c) blue-violet-orange (d) blue-violet-red
  26. 26.🌈 A resistor has the colour bands yellow, orange, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  30. 30.🌈 In the resistor colour code, which number does red stand for?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33000 Ω resistor? (a) orange-orange-orange (b) orange-yellow-orange (c) orange-orange-yellow (d) orange-orange-red
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-brown (b) violet-red-brown (c) red-violet-black (d) red-violet-red
  33. 33.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 690 Ω resistor? (a) blue-white-red (b) blue-white-black (c) white-blue-brown (d) blue-white-brown
  35. 35.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58000 Ω resistor? (a) green-grey-yellow (b) grey-green-orange (c) green-grey-orange (d) green-grey-red
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 130 Ω resistor? (a) brown-orange-brown (b) brown-orange-black (c) brown-orange-red (d) orange-brown-brown
  40. 40.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?

Answer key

  1. 7500
  2. 5 %
  3. 5
  4. the one nearest an end
  5. 6
  6. 4700
  7. 59
  8. 28
  9. red-orange-orange
  10. grey-yellow-black
  11. 51000
  12. 170
  13. 87
  14. 59000
  15. grey-white-brown
  16. 25
  17. 150
  18. 1.5
  19. 9300
  20. 740
  21. blue-grey-black
  22. 32
  23. 94
  24. yellow-grey-red
  25. blue-violet-red
  26. 43000
  27. 9.8
  28. 1700
  29. 38000
  30. 2
  31. orange-orange-orange
  32. red-violet-brown
  33. 2600
  34. blue-white-brown
  35. 80000
  36. 8.5
  37. 230
  38. green-grey-orange
  39. brown-orange-brown
  40. 190

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