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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 392 · 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 green stand for?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55 Ω resistor? (a) blue-green-black (b) green-green-black (c) green-green-brown (d) green-blue-black
  3. 3.🌈 In the resistor colour code, which number does yellow stand for?
  4. 4.🌈 In the resistor colour code, which number does orange stand for?
  5. 5.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-black (b) white-black-brown (c) white-black-red (d) brown-white-brown
  7. 7.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  8. 8.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the widest gap (d) the gold band
  9. 9.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands orange, green, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands yellow, green, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) orange-yellow-black (b) green-orange-black (c) yellow-orange-brown (d) yellow-orange-black
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29000 Ω resistor? (a) white-red-orange (b) red-white-red (c) red-white-yellow (d) red-white-orange
  17. 17.🌈 In the resistor colour code, which number does white stand for?
  18. 18.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
  21. 21.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  22. 22.🌈 In the resistor colour code, which number does brown stand for?
  23. 23.🌈 In the resistor colour code, which number does grey stand for?
  24. 24.🌈 A resistor has the colour bands blue, green, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69 Ω resistor? (a) blue-white-brown (b) white-blue-black (c) blue-white-black (d) violet-white-black
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) brown-grey-black (b) brown-grey-brown (c) grey-brown-black (d) red-grey-black
  28. 28.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64 Ω resistor? (a) yellow-blue-black (b) violet-yellow-black (c) blue-yellow-brown (d) blue-yellow-black
  30. 30.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-violet-black (b) violet-black-brown (c) violet-black-black (d) grey-black-black
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 710 Ω resistor? (a) brown-violet-brown (b) violet-brown-red (c) violet-brown-brown (d) violet-brown-black
  33. 33.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) red-yellow-black (b) yellow-red-black (c) green-red-black (d) yellow-red-brown
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) yellow-grey-black (b) grey-orange-black (c) orange-grey-brown (d) orange-grey-black
  36. 36.🌈 A resistor has the colour bands yellow, green, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands green, green, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 In the resistor colour code, which number does red stand for?
  40. 40.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?

Answer key

  1. 5
  2. green-green-black
  3. 4
  4. 3
  5. 6500
  6. white-black-brown
  7. 30000
  8. the one nearest an end
  9. 820
  10. 39000
  11. 5
  12. 350
  13. 45
  14. 750
  15. yellow-orange-black
  16. red-white-orange
  17. 9
  18. 76
  19. 3.6
  20. 8000
  21. 5 %
  22. 1
  23. 8
  24. 65
  25. 54
  26. blue-white-black
  27. brown-grey-black
  28. 410
  29. blue-yellow-black
  30. 74
  31. violet-black-black
  32. violet-brown-brown
  33. 8.2
  34. yellow-red-black
  35. orange-grey-black
  36. 4500
  37. 370
  38. 55
  39. 2
  40. 19

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