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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 205 · 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 yellow, violet, brown. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands brown, grey, black. 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) white-green-black (b) grey-green-black (c) green-grey-black (d) grey-green-brown
  5. 5.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands white, yellow, red. What is its value (in ohms)?
  7. 7.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  8. 8.🌈 In the resistor colour code, which number does violet stand for?
  9. 9.🌈 In the resistor colour code, which number does grey stand for?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83000 Ω resistor? (a) orange-grey-orange (b) grey-orange-yellow (c) grey-orange-orange (d) grey-orange-red
  12. 12.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does black stand for?
  14. 14.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) brown-violet-red (b) violet-brown-brown (c) violet-brown-orange (d) violet-brown-red
  17. 17.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45000 Ω resistor? (a) yellow-green-yellow (b) yellow-green-red (c) yellow-green-orange (d) green-yellow-orange
  24. 24.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does brown stand for?
  26. 26.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) green-brown-black (b) yellow-brown-black (c) brown-yellow-black (d) yellow-brown-brown
  31. 31.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands grey, orange, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands green, blue, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 17 Ω resistor? (a) brown-violet-brown (b) red-violet-black (c) violet-brown-black (d) brown-violet-black
  35. 35.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does white stand for?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) yellow-brown-brown (b) brown-yellow-red (c) brown-yellow-black (d) brown-yellow-brown
  38. 38.🌈 A resistor has the colour bands white, red, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands orange, violet, orange. What is its value (in ohms)?

Answer key

  1. 470
  2. 18
  3. 410
  4. grey-green-black
  5. 81000
  6. 9400
  7. the one nearest an end
  8. 7
  9. 8
  10. 5 %
  11. grey-orange-orange
  12. 670
  13. 0
  14. 44000
  15. 660
  16. violet-brown-red
  17. 53
  18. 8.1
  19. 79
  20. 76
  21. 70
  22. 1.7
  23. yellow-green-orange
  24. 380
  25. 1
  26. 8500
  27. 5800
  28. 1
  29. 2600
  30. yellow-brown-black
  31. 74
  32. 8300
  33. 56
  34. brown-violet-black
  35. 78
  36. 9
  37. brown-yellow-brown
  38. 92
  39. 56
  40. 37000

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