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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 603 · 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 brown stand for?
  2. 2.🌈 In the resistor colour code, which number does white stand for?
  3. 3.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
  4. 4.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  5. 5.🌈 A resistor has the colour bands violet, yellow, brown. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does violet stand for?
  7. 7.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  9. 9.🌈 A resistor has the colour bands blue, green, orange. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7900 Ω resistor? (a) white-violet-red (b) violet-white-orange (c) violet-white-brown (d) violet-white-red
  13. 13.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands violet, blue, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does red stand for?
  17. 17.🌈 A resistor has the colour bands blue, grey, red. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 750 Ω resistor? (a) green-violet-brown (b) violet-green-brown (c) violet-green-black (d) violet-green-red
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) brown-black-brown (b) brown-black-red (c) red-brown-red (d) brown-black-orange
  20. 20.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands grey, blue, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  26. 26.🌈 In the resistor colour code, which number does black stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88000 Ω resistor? (a) grey-grey-red (b) grey-white-orange (c) grey-grey-yellow (d) grey-grey-orange
  28. 28.🌈 In the resistor colour code, which number does grey stand for?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14 Ω resistor? (a) red-yellow-black (b) brown-yellow-brown (c) brown-yellow-black (d) yellow-brown-black
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6500 Ω resistor? (a) blue-green-orange (b) green-blue-red (c) blue-green-brown (d) blue-green-red
  31. 31.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does green stand for?
  33. 33.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, yellow, brown. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) blue-brown-black (b) brown-blue-black (c) blue-brown-brown (d) violet-brown-black
  36. 36.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5100 Ω resistor? (a) green-brown-orange (b) green-brown-red (c) green-brown-brown (d) brown-green-red
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) grey-red-brown (b) white-red-black (c) red-grey-black (d) grey-red-black
  40. 40.🌈 A resistor has the colour bands green, grey, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 1
  2. 9
  3. 16000
  4. the one nearest an end
  5. 740
  6. 7
  7. 3600
  8. 5 %
  9. 65000
  10. 30
  11. 4.6
  12. violet-white-red
  13. 150
  14. 76
  15. 78
  16. 2
  17. 6800
  18. violet-green-brown
  19. brown-black-red
  20. 29
  21. 6.1
  22. 860
  23. 6.3
  24. 650
  25. 69
  26. 0
  27. grey-grey-orange
  28. 8
  29. brown-yellow-black
  30. blue-green-red
  31. 6300
  32. 5
  33. 18
  34. 840
  35. blue-brown-black
  36. 4.1
  37. 81000
  38. green-brown-red
  39. grey-red-black
  40. 58

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