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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 30 · 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, yellow, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 25 % (d) 50 %
  5. 5.🌈 A resistor has the colour bands yellow, green, black. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands violet, red, red. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does green stand for?
  8. 8.🌈 In the resistor colour code, which number does blue stand for?
  9. 9.🌈 In the resistor colour code, which number does grey stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81000 Ω resistor? (a) brown-grey-orange (b) grey-brown-orange (c) grey-brown-red (d) grey-brown-yellow
  11. 11.🌈 In the resistor colour code, which number does black stand for?
  12. 12.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89 Ω resistor? (a) white-white-black (b) grey-white-black (c) white-grey-black (d) grey-white-brown
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92000 Ω resistor? (a) red-white-orange (b) white-red-yellow (c) white-red-red (d) white-red-orange
  16. 16.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-red-red (b) brown-brown-brown (c) brown-brown-red (d) brown-brown-orange
  18. 18.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 In the resistor colour code, which number does white stand for?
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64000 Ω resistor? (a) blue-yellow-red (b) blue-yellow-orange (c) yellow-blue-orange (d) blue-yellow-yellow
  23. 23.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands violet, grey, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) grey-red-black (b) red-grey-black (c) orange-grey-black (d) red-grey-brown
  28. 28.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-black (b) grey-violet-brown (c) violet-grey-brown (d) grey-violet-red
  30. 30.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6800 Ω resistor? (a) blue-grey-brown (b) grey-blue-red (c) blue-grey-orange (d) blue-grey-red
  32. 32.🌈 A resistor has the colour bands grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, violet, black. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) grey-red-brown (b) red-grey-red (c) red-grey-brown (d) red-grey-black
  36. 36.🌈 In the resistor colour code, which number does yellow stand for?
  37. 37.🌈 A resistor has the colour bands grey, white, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 44000
  2. 620
  3. 8000
  4. 5 %
  5. 45
  6. 7200
  7. 5
  8. 6
  9. 8
  10. grey-brown-orange
  11. 0
  12. 140
  13. 920
  14. grey-white-black
  15. white-red-orange
  16. the one nearest an end
  17. brown-brown-red
  18. 15000
  19. 510
  20. 9
  21. 1
  22. blue-yellow-orange
  23. 46
  24. 78000
  25. 85000
  26. 16
  27. red-grey-black
  28. 66
  29. grey-violet-brown
  30. 52
  31. blue-grey-red
  32. 860
  33. 3400
  34. 87
  35. red-grey-brown
  36. 4
  37. 89
  38. 44
  39. 17
  40. 5.2

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