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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 433 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36 Ω resistor? (a) blue-orange-black (b) yellow-blue-black (c) orange-blue-brown (d) orange-blue-black
  2. 2.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) yellow-orange-red (b) yellow-orange-brown (c) orange-yellow-brown (d) yellow-orange-black
  4. 4.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
  5. 5.🌈 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
  6. 6.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands white, yellow, red. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88 Ω resistor? (a) white-grey-black (b) grey-white-black (c) grey-grey-black (d) grey-grey-brown
  9. 9.🌈 In the resistor colour code, which number does red stand for?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  11. 11.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does orange stand for?
  13. 13.🌈 In the resistor colour code, which number does yellow stand for?
  14. 14.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does black stand for?
  16. 16.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does green stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26 Ω resistor? (a) red-blue-brown (b) orange-blue-black (c) red-blue-black (d) blue-red-black
  19. 19.🌈 A resistor has the colour bands violet, orange, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands violet, orange, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 In the resistor colour code, which number does violet stand for?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5100 Ω resistor? (a) green-brown-orange (b) green-brown-red (c) green-brown-brown (d) brown-green-red
  23. 23.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) violet-green-black (b) blue-green-black (c) blue-green-brown (d) green-blue-black
  30. 30.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19000 Ω resistor? (a) brown-white-yellow (b) brown-white-red (c) brown-white-orange (d) white-brown-orange
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 370 Ω resistor? (a) orange-violet-red (b) orange-violet-black (c) orange-violet-brown (d) violet-orange-brown
  34. 34.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands green, blue, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands white, yellow, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53000 Ω resistor? (a) orange-green-orange (b) green-orange-red (c) green-orange-yellow (d) green-orange-orange
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96000 Ω resistor? (a) white-blue-orange (b) blue-white-orange (c) white-blue-red (d) white-blue-yellow
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 630 Ω resistor? (a) orange-blue-brown (b) blue-orange-black (c) blue-orange-red (d) blue-orange-brown
  40. 40.🌈 A resistor has the colour bands red, violet, red. What is its value (in ohms)?

Answer key

  1. orange-blue-black
  2. 4800
  3. yellow-orange-brown
  4. 3200
  5. the one nearest an end
  6. 55
  7. 9400
  8. grey-grey-black
  9. 2
  10. 5 %
  11. 6
  12. 3
  13. 4
  14. 590
  15. 0
  16. 98000
  17. 5
  18. red-blue-black
  19. 7300
  20. 73
  21. 7
  22. green-brown-red
  23. 9.8
  24. 8.8
  25. 1200
  26. 870
  27. 30000
  28. 4700
  29. blue-green-black
  30. 390
  31. 71000
  32. brown-white-orange
  33. orange-violet-brown
  34. 81
  35. 5600
  36. 9.4
  37. green-orange-orange
  38. white-blue-orange
  39. blue-orange-brown
  40. 2700

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