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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 350 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-red (b) orange-red-orange (c) red-black-yellow (d) red-black-orange
  2. 2.🌈 A resistor has the colour bands brown, white, orange. What is its value (in ohms)?
  3. 3.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the widest gap (d) the one nearest an end
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32 Ω resistor? (a) orange-red-brown (b) yellow-red-black (c) red-orange-black (d) orange-red-black
  6. 6.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 In the resistor colour code, which number does violet stand for?
  9. 9.🌈 A resistor has the colour bands white, grey, black. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does blue stand for?
  11. 11.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4000 Ω resistor? (a) green-yellow-red (b) yellow-black-brown (c) yellow-black-orange (d) yellow-black-red
  15. 15.🌈 A resistor has the colour bands orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does white stand for?
  18. 18.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96 Ω resistor? (a) brown-blue-black (b) white-blue-brown (c) white-blue-black (d) blue-white-black
  22. 22.🌈 In the resistor colour code, which number does orange stand for?
  23. 23.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does green stand for?
  26. 26.🌈 In the resistor colour code, which number does yellow stand for?
  27. 27.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands yellow, grey, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 In the resistor colour code, which number does red stand for?
  30. 30.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) brown-yellow-brown (b) yellow-brown-brown (c) brown-yellow-black (d) brown-yellow-red
  33. 33.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands blue, red, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands green, grey, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) white-orange-brown (b) brown-orange-black (c) orange-white-black (d) white-orange-black
  38. 38.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?

Answer key

  1. red-black-orange
  2. 19000
  3. the one nearest an end
  4. 5 %
  5. orange-red-black
  6. 53
  7. 3.9
  8. 7
  9. 98
  10. 6
  11. 1.8
  12. 63
  13. 37
  14. yellow-black-red
  15. 34
  16. 46
  17. 9
  18. 92
  19. 90
  20. 38000
  21. white-blue-black
  22. 3
  23. 88000
  24. 750
  25. 5
  26. 4
  27. 21
  28. 48
  29. 2
  30. 8100
  31. 640
  32. brown-yellow-brown
  33. 47
  34. 6.2
  35. 58
  36. 570
  37. white-orange-black
  38. 200
  39. 57
  40. 23000

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