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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 161 · 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.🌈 In the resistor colour code, which number does blue stand for?
  3. 3.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-black-black (b) red-black-brown (c) orange-red-black (d) red-black-black
  5. 5.🌈 In the resistor colour code, which number does yellow stand for?
  6. 6.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  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.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does black stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13000 Ω resistor? (a) brown-orange-yellow (b) brown-orange-red (c) brown-orange-orange (d) orange-brown-orange
  11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  12. 12.🌈 A resistor has the colour bands violet, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8000 Ω resistor? (a) grey-black-orange (b) grey-black-brown (c) white-grey-red (d) grey-black-red
  15. 15.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands brown, blue, red. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands white, green, orange. What is its value (in ohms)?
  19. 19.🌈 In the resistor colour code, which number does brown stand for?
  20. 20.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does orange stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 97000 Ω resistor? (a) white-violet-red (b) violet-white-orange (c) white-violet-orange (d) white-violet-yellow
  24. 24.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74 Ω resistor? (a) yellow-violet-black (b) violet-yellow-brown (c) grey-yellow-black (d) violet-yellow-black
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-yellow-brown (b) green-yellow-black (c) yellow-yellow-black (d) yellow-green-black
  28. 28.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) red-red-black (b) brown-red-black (c) red-brown-black (d) brown-red-brown
  34. 34.🌈 A resistor has the colour bands yellow, yellow, brown. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) green-brown-brown (b) green-brown-black (c) brown-green-black (d) blue-brown-black
  36. 36.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 In the resistor colour code, which number does green stand for?
  39. 39.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands orange, grey, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 8
  2. 6
  3. 9.7
  4. red-black-black
  5. 4
  6. 160
  7. the one nearest an end
  8. 220
  9. 0
  10. brown-orange-orange
  11. 5 %
  12. 74
  13. 82000
  14. grey-black-red
  15. 7.4
  16. 1600
  17. 36
  18. 95000
  19. 1
  20. 54
  21. 24000
  22. 3
  23. white-violet-orange
  24. 81
  25. 91
  26. violet-yellow-black
  27. yellow-yellow-black
  28. 94000
  29. 5700
  30. 91000
  31. 50
  32. 3.6
  33. brown-red-black
  34. 440
  35. green-brown-black
  36. 8.9
  37. 2
  38. 5
  39. 9100
  40. 380

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