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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 478 · 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.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 50 % (d) 25 %
  2. 2.🌈 In the resistor colour code, which number does grey stand for?
  3. 3.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does green stand for?
  5. 5.🌈 A resistor has the colour bands grey, brown, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1600 Ω resistor? (a) brown-blue-brown (b) blue-brown-red (c) brown-blue-orange (d) brown-blue-red
  8. 8.🌈 A resistor has the colour bands green, blue, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does yellow stand for?
  10. 10.🌈 A resistor has the colour bands red, violet, brown. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) red-yellow-orange (b) yellow-red-red (c) yellow-red-yellow (d) yellow-red-orange
  13. 13.🌈 In the resistor colour code, which number does orange stand for?
  14. 14.🌈 In the resistor colour code, which number does black stand for?
  15. 15.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 910 Ω resistor? (a) white-brown-black (b) white-brown-brown (c) white-brown-red (d) brown-white-brown
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5000 Ω resistor? (a) green-black-orange (b) green-black-brown (c) blue-green-red (d) green-black-red
  18. 18.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86 Ω resistor? (a) blue-grey-black (b) grey-blue-brown (c) white-blue-black (d) grey-blue-black
  21. 21.🌈 A resistor has the colour bands violet, blue, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands green, orange, red. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54000 Ω resistor? (a) green-yellow-red (b) yellow-green-orange (c) green-yellow-yellow (d) green-yellow-orange
  24. 24.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 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
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) grey-yellow-black (b) yellow-grey-black (c) yellow-grey-brown (d) green-grey-black
  27. 27.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands white, yellow, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands violet, orange, red. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) brown-violet-brown (b) brown-violet-black (c) violet-brown-brown (d) brown-violet-red
  34. 34.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does white stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 720 Ω resistor? (a) violet-red-red (b) red-violet-brown (c) violet-red-brown (d) violet-red-black
  40. 40.🌈 In the resistor colour code, which number does blue stand for?

Answer key

  1. 5 %
  2. 8
  3. 910
  4. 5
  5. 810
  6. 3.8
  7. brown-blue-red
  8. 56
  9. 4
  10. 270
  11. 220
  12. yellow-red-orange
  13. 3
  14. 0
  15. 3.1
  16. white-brown-brown
  17. green-black-red
  18. 37
  19. 1200
  20. grey-blue-black
  21. 76000
  22. 5300
  23. green-yellow-orange
  24. 300
  25. the one nearest an end
  26. yellow-grey-black
  27. 89
  28. 500
  29. 990
  30. 9400
  31. 200
  32. 7300
  33. brown-violet-brown
  34. 62
  35. 54
  36. 820
  37. 19
  38. 9
  39. violet-red-brown
  40. 6

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