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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 551 · 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 blue, green, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does violet stand for?
  5. 5.🌈 In the resistor colour code, which number does blue stand for?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) orange-red-red (b) red-black-red (c) red-black-orange (d) red-black-brown
  7. 7.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands brown, orange, red. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands orange, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24000 Ω resistor? (a) red-yellow-yellow (b) red-yellow-orange (c) red-yellow-red (d) yellow-red-orange
  12. 12.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4700 Ω resistor? (a) yellow-violet-brown (b) yellow-violet-orange (c) violet-yellow-red (d) yellow-violet-red
  14. 14.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8700 Ω resistor? (a) grey-violet-red (b) grey-violet-brown (c) grey-violet-orange (d) violet-grey-red
  17. 17.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) blue-red-red (b) blue-red-brown (c) blue-red-black (d) red-blue-brown
  20. 20.🌈 In the resistor colour code, which number does red stand for?
  21. 21.🌈 A resistor has the colour bands green, orange, brown. What is its value (in ohms)?
  22. 22.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
  23. 23.🌈 A resistor has the colour bands violet, green, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands yellow, yellow, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does white stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83 Ω resistor? (a) orange-grey-black (b) white-orange-black (c) grey-orange-brown (d) grey-orange-black
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) white-grey-brown (b) brown-grey-black (c) white-grey-black (d) grey-white-black
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68 Ω resistor? (a) blue-grey-black (b) blue-grey-brown (c) grey-blue-black (d) violet-grey-black
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18000 Ω resistor? (a) brown-grey-red (b) brown-grey-orange (c) brown-grey-yellow (d) grey-brown-orange
  32. 32.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands red, white, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 In the resistor colour code, which number does green stand for?
  37. 37.🌈 In the resistor colour code, which number does brown stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) white-black-black (b) brown-white-black (c) white-white-brown (d) white-white-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) violet-black-brown (b) violet-black-black (c) grey-black-black (d) grey-violet-black
  40. 40.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?

Answer key

  1. 65
  2. 41
  3. 3.9
  4. 7
  5. 6
  6. red-black-red
  7. 70
  8. 1300
  9. 370
  10. 5 %
  11. red-yellow-orange
  12. 82
  13. yellow-violet-red
  14. 920
  15. 25000
  16. grey-violet-red
  17. 78
  18. 700
  19. blue-red-brown
  20. 2
  21. 530
  22. the one nearest an end
  23. 75000
  24. 440
  25. 5800
  26. 33
  27. 9
  28. grey-orange-black
  29. white-grey-black
  30. blue-grey-black
  31. brown-grey-orange
  32. 490
  33. 690
  34. 73
  35. 2.9
  36. 5
  37. 1
  38. white-white-black
  39. violet-black-black
  40. 18

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