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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 492 · 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 white stand for?
  2. 2.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does yellow stand for?
  4. 4.🌈 In the resistor colour code, which number does green stand for?
  5. 5.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  6. 6.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  7. 7.🌈 In the resistor colour code, which number does violet stand for?
  8. 8.🌈 In the resistor colour code, which number does black stand for?
  9. 9.🌈 A resistor has the colour bands brown, orange, red. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24 Ω resistor? (a) yellow-red-black (b) red-yellow-black (c) orange-yellow-black (d) red-yellow-brown
  11. 11.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-brown (b) red-green-red (c) red-green-orange (d) green-red-red
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89 Ω resistor? (a) grey-white-black (b) grey-white-brown (c) white-white-black (d) white-grey-black
  14. 14.🌈 A resistor has the colour bands yellow, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands orange, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) blue-black-black (b) blue-green-black (c) green-black-brown (d) green-black-black
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) yellow-orange-black (b) yellow-orange-brown (c) green-orange-black (d) orange-yellow-black
  26. 26.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?
  27. 27.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4100 Ω resistor? (a) yellow-brown-red (b) brown-yellow-red (c) yellow-brown-orange (d) yellow-brown-brown
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29 Ω resistor? (a) red-white-brown (b) white-red-black (c) orange-white-black (d) red-white-black
  30. 30.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands blue, green, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 In the resistor colour code, which number does red stand for?
  36. 36.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands white, red, orange. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 640 Ω resistor? (a) blue-yellow-black (b) blue-yellow-brown (c) blue-yellow-red (d) yellow-blue-brown
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 660 Ω resistor? (a) blue-blue-red (b) blue-blue-brown (c) blue-blue-black (d) blue-violet-brown

Answer key

  1. 9
  2. 990
  3. 4
  4. 5
  5. 2000
  6. the one nearest an end
  7. 7
  8. 0
  9. 1300
  10. red-yellow-black
  11. 3000
  12. red-green-red
  13. grey-white-black
  14. 480
  15. 500
  16. 41
  17. 1.8
  18. 450
  19. 2.4
  20. 41
  21. 1
  22. 4
  23. 380
  24. green-black-black
  25. yellow-orange-black
  26. 940
  27. 5 %
  28. yellow-brown-red
  29. red-white-black
  30. 70
  31. 8.2
  32. 2200
  33. 650
  34. 50
  35. 2
  36. 3300
  37. 57
  38. 92000
  39. blue-yellow-brown
  40. blue-blue-brown

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