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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 513 · 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 blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  3. 3.🌈 A resistor has the colour bands white, green, red. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) yellow-brown-brown (b) brown-yellow-red (c) brown-yellow-brown (d) brown-yellow-black
  5. 5.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands orange, orange, orange. What is its value (in ohms)?
  8. 8.🌈 In the resistor colour code, which number does yellow stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-red (b) red-red-brown (c) red-orange-brown (d) red-red-black
  10. 10.🌈 A resistor has the colour bands green, violet, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does red stand for?
  13. 13.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does green stand for?
  16. 16.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1900 Ω resistor? (a) brown-white-red (b) white-brown-red (c) brown-white-brown (d) brown-white-orange
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4600 Ω resistor? (a) blue-yellow-red (b) yellow-blue-brown (c) yellow-blue-orange (d) yellow-blue-red
  19. 19.🌈 In the resistor colour code, which number does black stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1300 Ω resistor? (a) brown-orange-orange (b) brown-orange-red (c) brown-orange-brown (d) orange-brown-red
  21. 21.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-brown (b) brown-red-black (c) red-brown-black (d) orange-brown-black
  26. 26.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45000 Ω resistor? (a) yellow-green-yellow (b) yellow-green-orange (c) green-yellow-orange (d) yellow-green-red
  28. 28.🌈 In the resistor colour code, which number does violet stand for?
  29. 29.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 440 Ω resistor? (a) yellow-yellow-black (b) yellow-green-brown (c) yellow-yellow-red (d) yellow-yellow-brown
  32. 32.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does orange stand for?
  36. 36.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) blue-red-brown (b) red-blue-red (c) blue-red-orange (d) blue-red-red
  39. 39.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?

Answer key

  1. 61
  2. 5 %
  3. 9500
  4. brown-yellow-brown
  5. 810
  6. 3700
  7. 33000
  8. 4
  9. red-red-brown
  10. 57
  11. 8.7
  12. 2
  13. 600
  14. 96
  15. 5
  16. the one nearest an end
  17. brown-white-red
  18. yellow-blue-red
  19. 0
  20. brown-orange-red
  21. 250
  22. 620
  23. 4.2
  24. 77
  25. red-brown-black
  26. 42
  27. yellow-green-orange
  28. 7
  29. 83
  30. 5100
  31. yellow-yellow-brown
  32. 82000
  33. 8800
  34. 180
  35. 3
  36. 6
  37. 51
  38. blue-red-red
  39. 79
  40. 94000

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