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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 49 · 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 an 88 Ω resistor? (a) white-grey-black (b) grey-white-black (c) grey-grey-brown (d) grey-grey-black
  3. 3.🌈 A resistor has the colour bands grey, green, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  5. 5.🌈 In the resistor colour code, which number does white stand for?
  6. 6.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84000 Ω resistor? (a) grey-yellow-yellow (b) grey-yellow-orange (c) grey-yellow-red (d) yellow-grey-orange
  14. 14.🌈 In the resistor colour code, which number does yellow stand for?
  15. 15.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) red-brown-red (b) brown-black-red (c) brown-black-orange (d) brown-black-brown
  17. 17.🌈 In the resistor colour code, which number does blue stand for?
  18. 18.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 50 % (d) 25 %
  19. 19.🌈 In the resistor colour code, which number does black stand for?
  20. 20.🌈 In the resistor colour code, which number does brown stand for?
  21. 21.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15 Ω resistor? (a) brown-green-brown (b) brown-green-black (c) red-green-black (d) green-brown-black
  25. 25.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands yellow, brown, red. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does violet stand for?
  28. 28.🌈 A resistor has the colour bands yellow, grey, brown. What is its value (in ohms)?
  29. 29.🌈 In the resistor colour code, which number does grey stand for?
  30. 30.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands green, red, red. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands violet, white, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-brown (b) orange-brown-black (c) yellow-brown-black (d) brown-orange-black

Answer key

  1. 5
  2. grey-grey-black
  3. 850
  4. the one nearest an end
  5. 9
  6. 820
  7. 510
  8. 340
  9. 1.3
  10. 6500
  11. 56000
  12. 210
  13. grey-yellow-orange
  14. 4
  15. 27000
  16. brown-black-red
  17. 6
  18. 5 %
  19. 0
  20. 1
  21. 52
  22. 8
  23. 1.8
  24. brown-green-black
  25. 12000
  26. 4100
  27. 7
  28. 480
  29. 8
  30. 14
  31. 790
  32. 2.7
  33. 970
  34. 5200
  35. 15
  36. 79000
  37. 7.4
  38. 8500
  39. 77
  40. orange-brown-black

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