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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 220 · 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 grey stand for?
  2. 2.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83 Ω resistor? (a) grey-orange-black (b) orange-grey-black (c) grey-orange-brown (d) white-orange-black
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19000 Ω resistor? (a) white-brown-orange (b) brown-white-yellow (c) brown-white-red (d) brown-white-orange
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94000 Ω resistor? (a) white-yellow-red (b) white-yellow-orange (c) white-yellow-yellow (d) yellow-white-orange
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8600 Ω resistor? (a) grey-blue-brown (b) grey-blue-orange (c) grey-blue-red (d) blue-grey-red
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) green-violet-black (b) yellow-violet-black (c) violet-yellow-black (d) yellow-violet-brown
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4000 Ω resistor? (a) yellow-black-brown (b) yellow-black-red (c) yellow-black-orange (d) green-yellow-red
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75000 Ω resistor? (a) violet-green-red (b) violet-green-yellow (c) violet-green-orange (d) green-violet-orange
  12. 12.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands brown, white, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-white-orange (b) white-black-red (c) white-white-brown (d) white-white-red
  18. 18.🌈 A resistor has the colour bands violet, orange, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59 Ω resistor? (a) green-white-brown (b) blue-white-black (c) white-green-black (d) green-white-black
  20. 20.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) violet-orange-black (b) orange-violet-black (c) yellow-violet-black (d) orange-violet-brown
  22. 22.🌈 In the resistor colour code, which number does green stand for?
  23. 23.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) orange-red-black (b) red-red-brown (c) red-orange-black (d) red-red-black
  27. 27.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands green, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-brown (b) red-orange-red (c) red-red-orange (d) red-red-red
  30. 30.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands green, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 In the resistor colour code, which number does white stand for?
  33. 33.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 In the resistor colour code, which number does yellow stand for?
  37. 37.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) yellow-orange-red (b) orange-black-orange (c) orange-black-red (d) orange-black-brown
  39. 39.🌈 A resistor has the colour bands yellow, orange, black. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does blue stand for?

Answer key

  1. 8
  2. 2.3
  3. 5
  4. grey-orange-black
  5. brown-white-orange
  6. white-yellow-orange
  7. grey-blue-red
  8. 5 %
  9. yellow-violet-black
  10. yellow-black-red
  11. violet-green-orange
  12. 7.2
  13. 160
  14. 6.7
  15. 1.9
  16. the one nearest an end
  17. white-white-red
  18. 73
  19. green-white-black
  20. 60
  21. orange-violet-black
  22. 5
  23. 2500
  24. 3.3
  25. 71000
  26. red-red-black
  27. 3700
  28. 560
  29. red-red-red
  30. 14
  31. 54
  32. 9
  33. 70
  34. 22000
  35. 4.1
  36. 4
  37. 42
  38. orange-black-red
  39. 43
  40. 6

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