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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 238 · 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 red, violet, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
  3. 3.🌈 In the resistor colour code, which number does red stand for?
  4. 4.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 In the resistor colour code, which number does orange stand for?
  7. 7.🌈 A resistor has the colour bands blue, brown, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands yellow, red, orange. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26 Ω resistor? (a) red-blue-brown (b) blue-red-black (c) red-blue-black (d) orange-blue-black
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6800 Ω resistor? (a) grey-blue-red (b) blue-grey-red (c) blue-grey-brown (d) blue-grey-orange
  11. 11.🌈 A resistor has the colour bands green, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does green stand for?
  13. 13.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 25 % (d) 0 %
  15. 15.🌈 A resistor has the colour bands blue, red, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands white, black, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands blue, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9200 Ω resistor? (a) white-red-orange (b) white-red-brown (c) red-white-red (d) white-red-red
  21. 21.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does brown stand for?
  23. 23.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands white, violet, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) brown-white-red (b) white-brown-brown (c) brown-white-black (d) brown-white-brown
  28. 28.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands yellow, green, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) yellow-violet-black (b) orange-violet-brown (c) orange-violet-black (d) violet-orange-black
  31. 31.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 60000 Ω resistor? (a) blue-black-orange (b) violet-blue-orange (c) blue-black-yellow (d) blue-black-red
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) white-orange-brown (b) white-orange-red (c) orange-white-brown (d) white-orange-black
  34. 34.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66000 Ω resistor? (a) blue-violet-orange (b) blue-blue-orange (c) blue-blue-yellow (d) blue-blue-red
  39. 39.🌈 A resistor has the colour bands green, red, 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. 2.7
  2. the one nearest an end
  3. 2
  4. 230
  5. 9.6
  6. 3
  7. 61
  8. 42000
  9. red-blue-black
  10. blue-grey-red
  11. 530
  12. 5
  13. 6.6
  14. 5 %
  15. 62
  16. 7
  17. 900
  18. 16000
  19. 610
  20. white-red-red
  21. 10
  22. 1
  23. 940
  24. 63
  25. 490
  26. 97
  27. brown-white-brown
  28. 43
  29. 4.5
  30. orange-violet-black
  31. 41
  32. blue-black-orange
  33. white-orange-brown
  34. 2.8
  35. 15
  36. 810
  37. 970
  38. blue-blue-orange
  39. 52
  40. 94000

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