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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 228 · 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) 25 % (d) 50 %
  2. 2.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
  3. 3.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands white, orange, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) blue-brown-red (b) blue-brown-orange (c) brown-blue-orange (d) blue-brown-yellow
  12. 12.🌈 In the resistor colour code, which number does green stand for?
  13. 13.🌈 A resistor has the colour bands green, green, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5000 Ω resistor? (a) green-black-orange (b) green-black-brown (c) green-black-red (d) blue-green-red
  15. 15.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) yellow-orange-black (b) yellow-yellow-black (c) orange-yellow-black (d) orange-yellow-brown
  18. 18.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  19. 19.🌈 In the resistor colour code, which number does blue stand for?
  20. 20.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands white, orange, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35 Ω resistor? (a) yellow-green-black (b) orange-green-black (c) green-orange-black (d) orange-green-brown
  23. 23.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands grey, violet, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) green-red-brown (b) red-green-brown (c) red-green-red (d) red-green-black
  29. 29.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands green, violet, black. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 750 Ω resistor? (a) green-violet-brown (b) violet-green-black (c) violet-green-red (d) violet-green-brown
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3800 Ω resistor? (a) grey-orange-red (b) orange-grey-red (c) orange-grey-brown (d) orange-grey-orange
  34. 34.🌈 In the resistor colour code, which number does yellow stand for?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3500 Ω resistor? (a) orange-green-brown (b) orange-green-red (c) green-orange-red (d) orange-green-orange
  36. 36.🌈 In the resistor colour code, which number does orange stand for?
  37. 37.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands orange, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 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
  40. 40.🌈 A resistor has the colour bands white, green, red. What is its value (in ohms)?

Answer key

  1. 5 %
  2. the one nearest an end
  3. 50
  4. 98000
  5. 5.9
  6. 44000
  7. 85000
  8. 900
  9. 93
  10. 37
  11. blue-brown-orange
  12. 5
  13. 55
  14. green-black-red
  15. 73
  16. 30000
  17. orange-yellow-black
  18. 21
  19. 6
  20. 76
  21. 9.3
  22. orange-green-black
  23. 21
  24. 570
  25. 8700
  26. 1800
  27. 1.8
  28. red-green-brown
  29. 82000
  30. 88
  31. 57
  32. violet-green-brown
  33. orange-grey-red
  34. 4
  35. orange-green-red
  36. 3
  37. 24000
  38. 330
  39. yellow-red-black
  40. 9500

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