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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 599 · 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 orange stand for?
  2. 2.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) the gold band (d) any band
  3. 3.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  5. 5.🌈 A resistor has the colour bands violet, orange, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands green, blue, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands brown, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands green, violet, orange. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2700 Ω resistor? (a) red-violet-brown (b) red-violet-orange (c) red-violet-red (d) violet-red-red
  14. 14.🌈 A resistor has the colour bands green, green, orange. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does red stand for?
  16. 16.🌈 A resistor has the colour bands violet, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands blue, green, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 In the resistor colour code, which number does white stand for?
  19. 19.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 550 Ω resistor? (a) green-green-red (b) green-blue-brown (c) green-green-black (d) green-green-brown
  21. 21.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does violet stand for?
  23. 23.🌈 In the resistor colour code, which number does green stand for?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) red-red-black (b) red-brown-black (c) brown-red-brown (d) brown-red-black
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89000 Ω resistor? (a) grey-white-orange (b) grey-white-yellow (c) white-grey-orange (d) grey-white-red
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) grey-yellow-black (b) white-yellow-black (c) yellow-grey-black (d) grey-yellow-brown
  27. 27.🌈 A resistor has the colour bands yellow, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does blue stand for?
  31. 31.🌈 In the resistor colour code, which number does yellow stand for?
  32. 32.🌈 In the resistor colour code, which number does black stand for?
  33. 33.🌈 A resistor has the colour bands yellow, orange, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) violet-red-brown (b) red-violet-black (c) grey-red-black (d) violet-red-black
  35. 35.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands orange, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 In the resistor colour code, which number does brown stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 470 Ω resistor? (a) violet-yellow-brown (b) yellow-violet-brown (c) yellow-violet-black (d) yellow-violet-red
  40. 40.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?

Answer key

  1. 3
  2. the one nearest an end
  3. 10000
  4. 5 %
  5. 7.3
  6. 100
  7. 140
  8. 56
  9. 3.1
  10. 140
  11. 8.8
  12. 57000
  13. red-violet-red
  14. 55000
  15. 2
  16. 74
  17. 65
  18. 9
  19. 30000
  20. green-green-brown
  21. 1700
  22. 7
  23. 5
  24. brown-red-black
  25. grey-white-orange
  26. grey-yellow-black
  27. 440
  28. 57
  29. 11
  30. 6
  31. 4
  32. 0
  33. 4.3
  34. violet-red-black
  35. 72
  36. 90
  37. 370
  38. 1
  39. yellow-violet-brown
  40. 23000

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