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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 145 · 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.🌈 In the resistor colour code, which number does white stand for?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6400 Ω resistor? (a) blue-yellow-red (b) yellow-blue-red (c) blue-yellow-brown (d) blue-yellow-orange
  3. 3.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  4. 4.🌈 A resistor has the colour bands violet, blue, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-orange (c) red-orange-red (d) red-orange-yellow
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  8. 8.🌈 A resistor has the colour bands orange, red, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) grey-yellow-red (b) yellow-grey-brown (c) yellow-grey-orange (d) yellow-grey-red
  11. 11.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does violet stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29000 Ω resistor? (a) white-red-orange (b) red-white-orange (c) red-white-red (d) red-white-yellow
  14. 14.🌈 A resistor has the colour bands yellow, orange, black. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does orange stand for?
  16. 16.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does brown stand for?
  18. 18.🌈 In the resistor colour code, which number does grey stand for?
  19. 19.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) violet-grey-brown (b) grey-grey-black (c) grey-violet-black (d) violet-grey-black
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) brown-red-orange (b) red-brown-red (c) brown-red-red (d) brown-red-brown
  22. 22.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) green-brown-yellow (b) brown-green-orange (c) green-brown-red (d) green-brown-orange
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 830 Ω resistor? (a) grey-orange-red (b) orange-grey-brown (c) grey-orange-black (d) grey-orange-brown
  26. 26.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) white-yellow-brown (b) yellow-white-black (c) brown-yellow-black (d) white-yellow-black
  28. 28.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands green, green, red. What is its value (in ohms)?
  30. 30.🌈 In the resistor colour code, which number does yellow stand for?
  31. 31.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) grey-yellow-black (b) yellow-grey-black (c) grey-yellow-brown (d) white-yellow-black
  33. 33.🌈 A resistor has the colour bands yellow, green, red. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) brown-orange-black (b) orange-brown-brown (c) orange-brown-black (d) yellow-brown-black
  35. 35.🌈 A resistor has the colour bands green, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does black stand for?

Answer key

  1. 9
  2. blue-yellow-red
  3. the one nearest an end
  4. 76
  5. 37
  6. red-orange-orange
  7. 5 %
  8. 32
  9. 83000
  10. yellow-grey-red
  11. 910
  12. 7
  13. red-white-orange
  14. 43
  15. 3
  16. 17
  17. 1
  18. 8
  19. 4800
  20. violet-grey-black
  21. brown-red-red
  22. 500
  23. 61
  24. green-brown-orange
  25. grey-orange-brown
  26. 870
  27. white-yellow-black
  28. 6100
  29. 5500
  30. 4
  31. 700
  32. grey-yellow-black
  33. 4500
  34. orange-brown-black
  35. 54
  36. 5.8
  37. 1700
  38. 91
  39. 650
  40. 0

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