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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 307 · 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, yellow, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  4. 4.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does black stand for?
  6. 6.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) the one nearest an end (d) any band
  7. 7.🌈 In the resistor colour code, which number does violet stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) white-grey-black (b) grey-white-brown (c) white-grey-brown (d) white-grey-red
  9. 9.🌈 A resistor has the colour bands white, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does red stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7400 Ω resistor? (a) violet-yellow-orange (b) violet-yellow-brown (c) violet-yellow-red (d) yellow-violet-red
  13. 13.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29000 Ω resistor? (a) red-white-orange (b) red-white-red (c) red-white-yellow (d) white-red-orange
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) white-red-brown (b) red-white-black (c) red-white-brown (d) red-white-red
  16. 16.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 17 Ω resistor? (a) brown-violet-black (b) violet-brown-black (c) red-violet-black (d) brown-violet-brown
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 130 Ω resistor? (a) brown-orange-black (b) brown-orange-brown (c) orange-brown-brown (d) brown-orange-red
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74 Ω resistor? (a) violet-yellow-black (b) yellow-violet-black (c) grey-yellow-black (d) violet-yellow-brown
  20. 20.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands green, brown, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands blue, blue, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) yellow-orange-red (b) orange-yellow-brown (c) yellow-orange-black (d) yellow-orange-brown
  26. 26.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 700 Ω resistor? (a) grey-violet-brown (b) violet-black-brown (c) violet-black-red (d) violet-black-black
  28. 28.🌈 In the resistor colour code, which number does blue stand for?
  29. 29.🌈 In the resistor colour code, which number does white stand for?
  30. 30.🌈 In the resistor colour code, which number does grey stand for?
  31. 31.🌈 A resistor has the colour bands violet, white, orange. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does brown stand for?
  33. 33.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43000 Ω resistor? (a) yellow-orange-red (b) yellow-orange-orange (c) orange-yellow-orange (d) yellow-orange-yellow
  36. 36.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67 Ω resistor? (a) violet-blue-black (b) violet-violet-black (c) blue-violet-black (d) blue-violet-brown
  38. 38.🌈 In the resistor colour code, which number does green stand for?
  39. 39.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 24
  2. 740
  3. 5 %
  4. 72
  5. 0
  6. the one nearest an end
  7. 7
  8. white-grey-brown
  9. 930
  10. 2.8
  11. 2
  12. violet-yellow-red
  13. 13
  14. red-white-orange
  15. red-white-brown
  16. 230
  17. brown-violet-black
  18. brown-orange-brown
  19. violet-yellow-black
  20. 970
  21. 69
  22. 5.1
  23. 66000
  24. 70
  25. yellow-orange-brown
  26. 23
  27. violet-black-brown
  28. 6
  29. 9
  30. 8
  31. 79000
  32. 1
  33. 710
  34. 510
  35. yellow-orange-orange
  36. 8.3
  37. blue-violet-black
  38. 5
  39. 2400
  40. 680

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