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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 211 · 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) 0 % (b) 5 % (c) 50 % (d) 25 %
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) blue-red-red (b) blue-red-brown (c) red-blue-red (d) blue-red-orange
  3. 3.🌈 In the resistor colour code, which number does orange stand for?
  4. 4.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  5. 5.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74000 Ω resistor? (a) violet-yellow-red (b) violet-yellow-orange (c) yellow-violet-orange (d) violet-yellow-yellow
  7. 7.🌈 In the resistor colour code, which number does red stand for?
  8. 8.🌈 In the resistor colour code, which number does blue stand for?
  9. 9.🌈 A resistor has the colour bands yellow, grey, black. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) brown-black-black (b) white-black-black (c) brown-white-black (d) white-black-brown
  11. 11.🌈 A resistor has the colour bands green, yellow, red. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) green-brown-black (b) brown-green-black (c) green-brown-brown (d) blue-brown-black
  13. 13.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands yellow, violet, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands blue, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands grey, blue, brown. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does green stand for?
  21. 21.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) white-violet-black (b) grey-violet-brown (c) violet-grey-black (d) grey-violet-black
  23. 23.🌈 In the resistor colour code, which number does white stand for?
  24. 24.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) green-yellow-black (b) yellow-black-black (c) yellow-black-brown (d) green-black-black
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) red-black-black (b) red-black-brown (c) orange-black-black (d) orange-red-black
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) yellow-grey-black (b) orange-grey-black (c) orange-grey-brown (d) grey-orange-black
  28. 28.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) violet-grey-orange (b) grey-violet-red (c) violet-grey-brown (d) violet-grey-red
  30. 30.🌈 A resistor has the colour bands blue, violet, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54 Ω resistor? (a) green-yellow-brown (b) yellow-green-black (c) green-yellow-black (d) blue-yellow-black
  33. 33.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) violet-orange-red (b) violet-orange-yellow (c) violet-orange-orange (d) orange-violet-orange
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) brown-grey-black (b) grey-brown-black (c) white-brown-black (d) grey-brown-brown
  36. 36.🌈 A resistor has the colour bands yellow, green, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64000 Ω resistor? (a) blue-yellow-orange (b) yellow-blue-orange (c) blue-yellow-yellow (d) blue-yellow-red
  39. 39.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands red, grey, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 5 %
  2. blue-red-red
  3. 3
  4. 37
  5. the one nearest an end
  6. violet-yellow-orange
  7. 2
  8. 6
  9. 48
  10. white-black-black
  11. 5400
  12. green-brown-black
  13. 4200
  14. 4.7
  15. 640
  16. 34
  17. 1.8
  18. 9.2
  19. 860
  20. 5
  21. 3400
  22. grey-violet-black
  23. 9
  24. 30
  25. yellow-black-black
  26. red-black-black
  27. orange-grey-black
  28. 730
  29. violet-grey-red
  30. 6700
  31. 1700
  32. green-yellow-black
  33. 10
  34. violet-orange-orange
  35. grey-brown-black
  36. 45
  37. 8.2
  38. blue-yellow-orange
  39. 9.8
  40. 28

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