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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 409 · 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.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  2. 2.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands white, green, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands grey, violet, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
  9. 9.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) yellow-grey-brown (b) green-grey-black (c) grey-yellow-black (d) yellow-grey-black
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) brown-grey-black (b) brown-grey-brown (c) red-grey-black (d) grey-brown-black
  13. 13.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands orange, green, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands green, yellow, red. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) green-black-black (b) yellow-black-brown (c) yellow-black-black (d) green-yellow-black
  20. 20.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands grey, white, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does red stand for?
  23. 23.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does green stand for?
  25. 25.🌈 A resistor has the colour bands yellow, white, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) red-black-black (b) orange-black-black (c) orange-red-black (d) red-black-brown
  27. 27.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) brown-red-brown (b) brown-red-orange (c) red-brown-red (d) brown-red-red
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55 Ω resistor? (a) green-green-brown (b) blue-green-black (c) green-green-black (d) green-blue-black
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 610 Ω resistor? (a) blue-brown-red (b) brown-blue-brown (c) blue-brown-black (d) blue-brown-brown
  32. 32.🌈 In the resistor colour code, which number does white stand for?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 650 Ω resistor? (a) blue-green-red (b) green-blue-brown (c) blue-green-brown (d) blue-green-black
  34. 34.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does orange stand for?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55000 Ω resistor? (a) green-blue-orange (b) green-green-yellow (c) green-green-orange (d) green-green-red
  37. 37.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands orange, blue, orange. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57 Ω resistor? (a) green-violet-brown (b) violet-green-black (c) green-violet-black (d) blue-violet-black
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 490 Ω resistor? (a) yellow-white-black (b) yellow-white-brown (c) yellow-white-red (d) white-yellow-brown

Answer key

  1. 5 %
  2. 10000
  3. 230
  4. 95
  5. 810
  6. 87
  7. 360
  8. the one nearest an end
  9. 40000
  10. 17000
  11. yellow-grey-black
  12. brown-grey-black
  13. 680
  14. 7.6
  15. 3500
  16. 60
  17. 500
  18. 5400
  19. yellow-black-black
  20. 1400
  21. 89
  22. 2
  23. 2.8
  24. 5
  25. 4.9
  26. red-black-black
  27. 61000
  28. 240
  29. brown-red-red
  30. green-green-black
  31. blue-brown-brown
  32. 9
  33. blue-green-brown
  34. 900
  35. 3
  36. green-green-orange
  37. 18
  38. 36000
  39. green-violet-black
  40. yellow-white-brown

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