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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 38 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54 Ω resistor? (a) green-yellow-black (b) yellow-green-black (c) blue-yellow-black (d) green-yellow-brown
  2. 2.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40000 Ω resistor? (a) yellow-black-red (b) yellow-black-yellow (c) green-yellow-orange (d) yellow-black-orange
  4. 4.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the gold band (d) the widest gap
  5. 5.🌈 In the resistor colour code, which number does yellow stand for?
  6. 6.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24000 Ω resistor? (a) red-yellow-red (b) red-yellow-yellow (c) yellow-red-orange (d) red-yellow-orange
  8. 8.🌈 In the resistor colour code, which number does blue stand for?
  9. 9.🌈 A resistor has the colour bands white, green, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does green stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5000 Ω resistor? (a) green-black-orange (b) blue-green-red (c) green-black-brown (d) green-black-red
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) white-black-black (b) white-black-brown (c) brown-black-black (d) brown-white-black
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  15. 15.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does black stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96 Ω resistor? (a) brown-blue-black (b) white-blue-brown (c) white-blue-black (d) blue-white-black
  22. 22.🌈 A resistor has the colour bands white, orange, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 550 Ω resistor? (a) green-green-brown (b) green-green-black (c) green-blue-brown (d) green-green-red
  25. 25.🌈 A resistor has the colour bands white, yellow, red. What is its value (in ohms)?
  26. 26.🌈 In the resistor colour code, which number does violet stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-black (b) yellow-brown-black (c) brown-orange-black (d) orange-brown-brown
  28. 28.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 780 Ω resistor? (a) violet-grey-brown (b) grey-violet-brown (c) violet-grey-black (d) violet-grey-red
  30. 30.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 750 Ω resistor? (a) violet-green-black (b) green-violet-brown (c) violet-green-brown (d) violet-green-red
  32. 32.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands yellow, brown, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands white, white, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands yellow, orange, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) blue-red-yellow (b) red-blue-orange (c) blue-red-orange (d) blue-red-red
  39. 39.🌈 A resistor has the colour bands yellow, orange, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) orange-grey-black (b) grey-red-black (c) red-grey-black (d) red-grey-brown

Answer key

  1. green-yellow-black
  2. 17
  3. yellow-black-orange
  4. the one nearest an end
  5. 4
  6. 50000
  7. red-yellow-orange
  8. 6
  9. 95
  10. 83
  11. 5
  12. green-black-red
  13. white-black-black
  14. 5 %
  15. 430
  16. 820
  17. 2500
  18. 6900
  19. 2600
  20. 0
  21. white-blue-black
  22. 9300
  23. 7100
  24. green-green-brown
  25. 9400
  26. 7
  27. orange-brown-black
  28. 3.8
  29. violet-grey-brown
  30. 2.2
  31. violet-green-brown
  32. 9.9
  33. 4100
  34. 90
  35. 990
  36. 43
  37. 9900
  38. blue-red-orange
  39. 43000
  40. red-grey-black

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