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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 115 · 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 orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11 Ω resistor? (a) brown-red-black (b) brown-brown-black (c) red-brown-black (d) brown-brown-brown
  4. 4.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  5. 5.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) the one nearest an end (d) any band
  6. 6.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  8. 8.🌈 A resistor has the colour bands grey, orange, red. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does green stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84000 Ω resistor? (a) yellow-grey-orange (b) grey-yellow-yellow (c) grey-yellow-red (d) grey-yellow-orange
  11. 11.🌈 In the resistor colour code, which number does violet stand for?
  12. 12.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4100 Ω resistor? (a) yellow-brown-orange (b) yellow-brown-brown (c) yellow-brown-red (d) brown-yellow-red
  14. 14.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) blue-black-black (b) green-black-black (c) blue-green-black (d) green-black-brown
  18. 18.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands orange, orange, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8700 Ω resistor? (a) grey-violet-orange (b) violet-grey-red (c) grey-violet-brown (d) grey-violet-red
  25. 25.🌈 A resistor has the colour bands white, violet, orange. What is its value (in ohms)?
  26. 26.🌈 In the resistor colour code, which number does black stand for?
  27. 27.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does grey stand for?
  31. 31.🌈 In the resistor colour code, which number does red stand for?
  32. 32.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) grey-black-yellow (b) white-grey-orange (c) grey-black-red (d) grey-black-orange
  34. 34.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) red-brown-brown (b) red-brown-red (c) red-brown-orange (d) brown-red-red
  38. 38.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?

Answer key

  1. 34
  2. 4.1
  3. brown-brown-black
  4. 37
  5. the one nearest an end
  6. 89000
  7. 5 %
  8. 8300
  9. 5
  10. grey-yellow-orange
  11. 7
  12. 12000
  13. yellow-brown-red
  14. 890
  15. 46
  16. 710
  17. green-black-black
  18. 17
  19. 83
  20. 31
  21. 33000
  22. 10
  23. 20
  24. grey-violet-red
  25. 97000
  26. 0
  27. 780
  28. 740
  29. 6.9
  30. 8
  31. 2
  32. 5.4
  33. grey-black-orange
  34. 64
  35. 40
  36. 170
  37. red-brown-red
  38. 78
  39. 70000
  40. 90000

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