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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 422 · 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.🌈 In the resistor colour code, which number does black stand for?
  2. 2.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  3. 3.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-brown (b) red-white-red (c) white-red-brown (d) red-white-black
  6. 6.🌈 In the resistor colour code, which number does brown stand for?
  7. 7.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54 Ω resistor? (a) green-yellow-brown (b) green-yellow-black (c) yellow-green-black (d) blue-yellow-black
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  10. 10.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does orange stand for?
  13. 13.🌈 In the resistor colour code, which number does violet stand for?
  14. 14.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) violet-blue-red (b) violet-blue-black (c) blue-violet-brown (d) violet-blue-brown
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48000 Ω resistor? (a) grey-yellow-orange (b) yellow-grey-orange (c) yellow-grey-yellow (d) yellow-grey-red
  22. 22.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands blue, brown, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 380 Ω resistor? (a) orange-grey-brown (b) orange-grey-black (c) grey-orange-brown (d) orange-grey-red
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35 Ω resistor? (a) green-orange-black (b) yellow-green-black (c) orange-green-brown (d) orange-green-black
  28. 28.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) blue-brown-red (b) blue-brown-orange (c) blue-brown-yellow (d) brown-blue-orange
  31. 31.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8000 Ω resistor? (a) white-grey-red (b) grey-black-brown (c) grey-black-red (d) grey-black-orange
  34. 34.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does white stand for?
  37. 37.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-yellow-red (b) orange-orange-brown (c) orange-orange-red (d) orange-orange-orange
  39. 39.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 0
  2. the one nearest an end
  3. 390
  4. 90
  5. red-white-brown
  6. 1
  7. 46
  8. green-yellow-black
  9. 5 %
  10. 29
  11. 85000
  12. 3
  13. 7
  14. 2.3
  15. 3.6
  16. 2600
  17. 710
  18. 5.9
  19. 120
  20. violet-blue-brown
  21. yellow-grey-orange
  22. 680
  23. 61
  24. 91000
  25. 63
  26. orange-grey-brown
  27. orange-green-black
  28. 67
  29. 970
  30. blue-brown-orange
  31. 4800
  32. 34000
  33. grey-black-red
  34. 88
  35. 69
  36. 9
  37. 240
  38. orange-orange-red
  39. 24
  40. 1.7

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