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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 308 · 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.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 940 Ω resistor? (a) white-yellow-black (b) yellow-white-brown (c) white-yellow-brown (d) white-yellow-red
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) red-brown-red (b) red-brown-orange (c) red-brown-brown (d) brown-red-red
  7. 7.🌈 In the resistor colour code, which number does violet stand for?
  8. 8.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 770 Ω resistor? (a) violet-violet-black (b) violet-grey-brown (c) violet-violet-brown (d) violet-violet-red
  11. 11.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  12. 12.🌈 A resistor has the colour bands red, white, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) red-yellow-brown (b) yellow-red-red (c) yellow-red-brown (d) yellow-red-black
  16. 16.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does blue stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) green-red-red (b) red-green-red (c) red-green-brown (d) red-green-orange
  19. 19.🌈 In the resistor colour code, which number does black stand for?
  20. 20.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does green stand for?
  22. 22.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does yellow stand for?
  24. 24.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38000 Ω resistor? (a) orange-grey-yellow (b) orange-grey-orange (c) orange-grey-red (d) grey-orange-orange
  28. 28.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 700 Ω resistor? (a) grey-violet-brown (b) violet-black-black (c) violet-black-brown (d) violet-black-red
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29 Ω resistor? (a) orange-white-black (b) red-white-black (c) red-white-brown (d) white-red-black
  34. 34.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96000 Ω resistor? (a) white-blue-orange (b) white-blue-red (c) blue-white-orange (d) white-blue-yellow
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) grey-violet-black (b) violet-grey-black (c) violet-grey-brown (d) grey-grey-black
  37. 37.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 5.4
  2. 920
  3. 410
  4. 70000
  5. white-yellow-brown
  6. red-brown-red
  7. 7
  8. 21
  9. 18
  10. violet-violet-brown
  11. the one nearest an end
  12. 29000
  13. 78
  14. 5 %
  15. yellow-red-brown
  16. 110
  17. 6
  18. red-green-red
  19. 0
  20. 83000
  21. 5
  22. 92
  23. 4
  24. 56
  25. 1100
  26. 16000
  27. orange-grey-orange
  28. 3.5
  29. 39000
  30. 17000
  31. 3.4
  32. violet-black-brown
  33. red-white-black
  34. 8.2
  35. white-blue-orange
  36. violet-grey-black
  37. 500
  38. 44
  39. 43
  40. 200

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