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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 122 · 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 brown, violet, red. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
  4. 4.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  5. 5.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does brown stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92 Ω resistor? (a) white-red-black (b) red-white-black (c) brown-red-black (d) white-red-brown
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  10. 10.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5200 Ω resistor? (a) green-red-orange (b) green-red-red (c) red-green-red (d) green-red-brown
  12. 12.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6500 Ω resistor? (a) green-blue-red (b) blue-green-red (c) blue-green-orange (d) blue-green-brown
  14. 14.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands white, blue, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9300 Ω resistor? (a) white-orange-brown (b) orange-white-red (c) white-orange-orange (d) white-orange-red
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49 Ω resistor? (a) yellow-white-black (b) white-yellow-black (c) yellow-white-brown (d) green-white-black
  22. 22.🌈 In the resistor colour code, which number does grey stand for?
  23. 23.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does blue stand for?
  25. 25.🌈 A resistor has the colour bands white, red, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does black stand for?
  28. 28.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 In the resistor colour code, which number does violet stand for?
  34. 34.🌈 In the resistor colour code, which number does red stand for?
  35. 35.🌈 A resistor has the colour bands yellow, red, orange. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71 Ω resistor? (a) violet-brown-black (b) violet-brown-brown (c) grey-brown-black (d) brown-violet-black
  37. 37.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?

Answer key

  1. 1700
  2. 26
  3. 94
  4. the one nearest an end
  5. 18000
  6. 6500
  7. 1
  8. white-red-black
  9. 5 %
  10. 5700
  11. green-red-red
  12. 4.4
  13. blue-green-red
  14. 7.8
  15. 9700
  16. 99
  17. 88000
  18. 96000
  19. 19
  20. white-orange-red
  21. yellow-white-black
  22. 8
  23. 6
  24. 6
  25. 92
  26. 1.7
  27. 0
  28. 2.6
  29. 2100
  30. 67
  31. 78
  32. 3.2
  33. 7
  34. 2
  35. 42000
  36. violet-brown-black
  37. 66
  38. 46
  39. 4.6
  40. 420

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