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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 604 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4900 Ω resistor? (a) white-yellow-red (b) yellow-white-brown (c) yellow-white-orange (d) yellow-white-red
  2. 2.🌈 In the resistor colour code, which number does violet stand for?
  3. 3.🌈 A resistor has the colour bands blue, violet, red. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does yellow stand for?
  5. 5.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  7. 7.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) grey-black-black (b) grey-black-brown (c) white-grey-black (d) white-black-black
  9. 9.🌈 In the resistor colour code, which number does green stand for?
  10. 10.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does blue stand for?
  13. 13.🌈 In the resistor colour code, which number does red stand for?
  14. 14.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does grey stand for?
  18. 18.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands green, blue, red. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) red-black-red (b) red-black-orange (c) orange-red-red (d) red-black-brown
  24. 24.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does black stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 990 Ω resistor? (a) white-white-red (b) white-white-black (c) white-white-brown (d) white-black-brown
  27. 27.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2400 Ω resistor? (a) red-yellow-red (b) red-yellow-brown (c) yellow-red-red (d) red-yellow-orange
  32. 32.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-red (b) red-red-brown (c) red-red-orange (d) red-orange-red
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) yellow-brown-brown (b) brown-yellow-black (c) brown-yellow-red (d) brown-yellow-brown
  35. 35.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7000 Ω resistor? (a) violet-black-brown (b) grey-violet-red (c) violet-black-orange (d) violet-black-red
  40. 40.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?

Answer key

  1. yellow-white-red
  2. 7
  3. 6700
  4. 4
  5. 50
  6. 5 %
  7. the one nearest an end
  8. grey-black-black
  9. 5
  10. 250
  11. 5.4
  12. 6
  13. 2
  14. 13
  15. 500
  16. 9.5
  17. 8
  18. 1700
  19. 2400
  20. 5600
  21. 1
  22. 42
  23. red-black-red
  24. 690
  25. 0
  26. white-white-brown
  27. 88
  28. 8500
  29. 62
  30. 52000
  31. red-yellow-red
  32. 98000
  33. red-red-red
  34. brown-yellow-brown
  35. 8200
  36. 310
  37. 8000
  38. 2.8
  39. violet-black-red
  40. 85

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