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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 479 · 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.

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  1. 1.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does yellow stand for?
  4. 4.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands green, green, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) orange-yellow-brown (b) yellow-orange-brown (c) yellow-orange-black (d) yellow-orange-red
  7. 7.🌈 In the resistor colour code, which number does brown stand for?
  8. 8.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  10. 10.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does grey stand for?
  12. 12.🌈 A resistor has the colour bands green, orange, red. What is its value (in ohms)?
  13. 13.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 25 % (d) 0 %
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) red-orange-brown (b) red-orange-orange (c) orange-red-red (d) red-orange-red
  15. 15.🌈 In the resistor colour code, which number does green stand for?
  16. 16.🌈 A resistor has the colour bands white, violet, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands violet, violet, red. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 950 Ω resistor? (a) white-green-black (b) green-white-brown (c) white-green-brown (d) white-green-red
  19. 19.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands yellow, red, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2700 Ω resistor? (a) red-violet-orange (b) red-violet-red (c) red-violet-brown (d) violet-red-red
  22. 22.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does blue stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68 Ω resistor? (a) blue-grey-brown (b) grey-blue-black (c) violet-grey-black (d) blue-grey-black
  27. 27.🌈 A resistor has the colour bands blue, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 In the resistor colour code, which number does violet stand for?
  29. 29.🌈 In the resistor colour code, which number does orange stand for?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4700 Ω resistor? (a) yellow-violet-red (b) violet-yellow-red (c) yellow-violet-brown (d) yellow-violet-orange
  31. 31.🌈 A resistor has the colour bands grey, orange, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) brown-red-orange (b) red-brown-orange (c) red-brown-yellow (d) red-brown-red
  33. 33.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands green, violet, black. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) green-black-black (b) blue-green-black (c) green-black-brown (d) blue-black-black
  36. 36.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74000 Ω resistor? (a) violet-yellow-orange (b) violet-yellow-red (c) violet-yellow-yellow (d) yellow-violet-orange
  40. 40.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?

Answer key

  1. 53
  2. 610
  3. 4
  4. 5800
  5. 550
  6. yellow-orange-brown
  7. 1
  8. 5.5
  9. the one nearest an end
  10. 5100
  11. 8
  12. 5300
  13. 5 %
  14. red-orange-red
  15. 5
  16. 97000
  17. 7700
  18. white-green-brown
  19. 18000
  20. 420
  21. red-violet-red
  22. 35000
  23. 16
  24. 2.1
  25. 6
  26. blue-grey-black
  27. 64
  28. 7
  29. 3
  30. yellow-violet-red
  31. 83
  32. red-brown-orange
  33. 41
  34. 57
  35. green-black-black
  36. 2100
  37. 720
  38. 32
  39. violet-yellow-orange
  40. 130

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