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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 744 · 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, green, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does violet stand for?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49000 Ω resistor? (a) yellow-white-yellow (b) white-yellow-orange (c) yellow-white-red (d) yellow-white-orange
  5. 5.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59000 Ω resistor? (a) green-white-orange (b) green-white-yellow (c) white-green-orange (d) green-white-red
  7. 7.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) the gold band (d) any band
  8. 8.🌈 A resistor has the colour bands brown, white, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
  10. 10.🌈 In the resistor colour code, which number does red stand for?
  11. 11.🌈 In the resistor colour code, which number does green stand for?
  12. 12.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does brown stand for?
  14. 14.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69 Ω resistor? (a) blue-white-brown (b) white-blue-black (c) blue-white-black (d) violet-white-black
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1600 Ω resistor? (a) blue-brown-red (b) brown-blue-orange (c) brown-blue-brown (d) brown-blue-red
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 46000 Ω resistor? (a) yellow-blue-red (b) yellow-blue-yellow (c) yellow-blue-orange (d) blue-yellow-orange
  23. 23.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8300 Ω resistor? (a) grey-orange-red (b) grey-orange-orange (c) grey-orange-brown (d) orange-grey-red
  25. 25.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, white, red. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) brown-orange-red (b) orange-brown-brown (c) orange-brown-orange (d) orange-brown-red
  29. 29.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands violet, white, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) red-green-black (b) green-red-black (c) red-green-brown (d) orange-green-black
  34. 34.🌈 A resistor has the colour bands orange, red, brown. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands blue, blue, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands violet, violet, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?

Answer key

  1. 3.5
  2. 60000
  3. 7
  4. yellow-white-orange
  5. 81
  6. green-white-orange
  7. the one nearest an end
  8. 19
  9. 5 %
  10. 2
  11. 5
  12. 2500
  13. 1
  14. 6200
  15. 8.2
  16. 23
  17. 88
  18. 300
  19. 55
  20. blue-white-black
  21. brown-blue-red
  22. yellow-blue-orange
  23. 7100
  24. grey-orange-red
  25. 99
  26. 5000
  27. 1900
  28. orange-brown-red
  29. 84
  30. 790
  31. 82000
  32. 31
  33. red-green-black
  34. 320
  35. 79
  36. 660
  37. 7.9
  38. 60
  39. 7700
  40. 2400

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