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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 555 · 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 blue stand for?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  3. 3.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does grey stand for?
  5. 5.🌈 In the resistor colour code, which number does brown stand for?
  6. 6.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) red-orange-brown (b) orange-red-black (c) red-orange-black (d) orange-orange-black
  8. 8.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the widest gap (d) the gold band
  9. 9.🌈 A resistor has the colour bands orange, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 In the resistor colour code, which number does orange stand for?
  11. 11.🌈 A resistor has the colour bands yellow, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 570 Ω resistor? (a) green-violet-brown (b) green-violet-black (c) violet-green-brown (d) green-violet-red
  13. 13.🌈 In the resistor colour code, which number does black stand for?
  14. 14.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) grey-brown-black (b) brown-grey-black (c) red-grey-black (d) brown-grey-brown
  16. 16.🌈 A resistor has the colour bands white, red, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 97000 Ω resistor? (a) violet-white-orange (b) white-violet-yellow (c) white-violet-orange (d) white-violet-red
  19. 19.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands grey, red, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) blue-red-brown (b) red-blue-red (c) blue-red-orange (d) blue-red-red
  27. 27.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands grey, violet, red. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) yellow-orange-brown (b) orange-yellow-brown (c) yellow-orange-black (d) yellow-orange-red
  30. 30.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does yellow stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54 Ω resistor? (a) yellow-green-black (b) blue-yellow-black (c) green-yellow-black (d) green-yellow-brown
  33. 33.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) red-brown-red (b) red-brown-brown (c) red-brown-black (d) brown-red-brown
  35. 35.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does green stand for?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34000 Ω resistor? (a) orange-yellow-yellow (b) orange-yellow-red (c) yellow-orange-orange (d) orange-yellow-orange
  38. 38.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands red, white, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 6
  2. 5 %
  3. 14000
  4. 8
  5. 1
  6. 4.8
  7. red-orange-black
  8. the one nearest an end
  9. 380
  10. 3
  11. 460
  12. green-violet-brown
  13. 0
  14. 6.7
  15. brown-grey-black
  16. 92000
  17. 20
  18. white-violet-orange
  19. 4200
  20. 82
  21. 240
  22. 750
  23. 18000
  24. 16
  25. 2.4
  26. blue-red-red
  27. 1
  28. 8700
  29. yellow-orange-brown
  30. 9.1
  31. 4
  32. green-yellow-black
  33. 86
  34. red-brown-brown
  35. 700
  36. 5
  37. orange-yellow-orange
  38. 220
  39. 680
  40. 2.9

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