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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 643 · 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.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the widest gap (d) the one nearest an end
  2. 2.🌈 A resistor has the colour bands white, orange, brown. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does white stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) red-yellow-orange (b) yellow-red-yellow (c) yellow-red-red (d) yellow-red-orange
  6. 6.🌈 A resistor has the colour bands green, grey, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  11. 11.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1900 Ω resistor? (a) brown-white-red (b) white-brown-red (c) brown-white-orange (d) brown-white-brown
  14. 14.🌈 A resistor has the colour bands brown, blue, red. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands violet, brown, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4400 Ω resistor? (a) yellow-green-red (b) yellow-yellow-brown (c) yellow-yellow-red (d) yellow-yellow-orange
  19. 19.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8400 Ω resistor? (a) yellow-grey-red (b) grey-yellow-brown (c) grey-yellow-orange (d) grey-yellow-red
  21. 21.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does orange stand for?
  26. 26.🌈 In the resistor colour code, which number does black stand for?
  27. 27.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) green-grey-black (b) yellow-grey-black (c) grey-yellow-black (d) yellow-grey-brown
  32. 32.🌈 In the resistor colour code, which number does grey stand for?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) yellow-green-black (b) yellow-green-brown (c) green-green-black (d) green-yellow-black
  34. 34.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) red-green-red (b) green-red-brown (c) red-green-black (d) red-green-brown
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4600 Ω resistor? (a) yellow-blue-orange (b) yellow-blue-red (c) blue-yellow-red (d) yellow-blue-brown
  38. 38.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
  39. 39.🌈 In the resistor colour code, which number does blue stand for?
  40. 40.🌈 In the resistor colour code, which number does violet stand for?

Answer key

  1. the one nearest an end
  2. 930
  3. 12
  4. 9
  5. yellow-red-orange
  6. 58
  7. 72000
  8. 43
  9. 1500
  10. 5 %
  11. 23
  12. 50
  13. brown-white-red
  14. 1600
  15. 420
  16. 71
  17. 210
  18. yellow-yellow-red
  19. 960
  20. grey-yellow-red
  21. 680
  22. 18
  23. 3600
  24. 8
  25. 3
  26. 0
  27. 140
  28. 36
  29. 63000
  30. 98000
  31. yellow-grey-black
  32. 8
  33. yellow-green-black
  34. 24
  35. 44
  36. red-green-brown
  37. yellow-blue-red
  38. 370
  39. 6
  40. 7

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