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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 688 · 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 black stand for?
  2. 2.🌈 A resistor has the colour bands grey, blue, brown. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands red, grey, red. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands blue, green, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does brown stand for?
  8. 8.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8100 Ω resistor? (a) grey-brown-orange (b) brown-grey-red (c) grey-brown-red (d) grey-brown-brown
  11. 11.🌈 In the resistor colour code, which number does green stand for?
  12. 12.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does violet stand for?
  14. 14.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5000 Ω resistor? (a) green-black-brown (b) green-black-orange (c) blue-green-red (d) green-black-red
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91000 Ω resistor? (a) white-brown-yellow (b) white-brown-red (c) brown-white-orange (d) white-brown-orange
  17. 17.🌈 A resistor has the colour bands grey, violet, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) grey-red-red (b) red-grey-orange (c) red-grey-brown (d) red-grey-red
  21. 21.🌈 A resistor has the colour bands violet, yellow, orange. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does white stand for?
  23. 23.🌈 In the resistor colour code, which number does red stand for?
  24. 24.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) violet-grey-orange (b) violet-grey-brown (c) violet-grey-red (d) grey-violet-red
  28. 28.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands green, orange, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does blue stand for?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9700 Ω resistor? (a) white-violet-brown (b) white-violet-red (c) violet-white-red (d) white-violet-orange
  32. 32.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands grey, orange, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) violet-grey-black (b) grey-violet-black (c) grey-violet-brown (d) white-violet-black
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56 Ω resistor? (a) green-blue-brown (b) green-blue-black (c) blue-blue-black (d) blue-green-black
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 160 Ω resistor? (a) blue-brown-brown (b) brown-blue-red (c) brown-blue-black (d) brown-blue-brown
  37. 37.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) red-black-brown (b) red-black-black (c) orange-black-black (d) orange-red-black

Answer key

  1. 0
  2. 860
  3. 2800
  4. 8.3
  5. 6
  6. 650
  7. 1
  8. 14000
  9. 5 %
  10. grey-brown-red
  11. 5
  12. 410
  13. 7
  14. 14
  15. green-black-red
  16. white-brown-orange
  17. 87
  18. 13
  19. 6400
  20. red-grey-red
  21. 74000
  22. 9
  23. 2
  24. 21
  25. 64000
  26. 3000
  27. violet-grey-red
  28. 90000
  29. 5.3
  30. 6
  31. white-violet-red
  32. 12000
  33. 83
  34. grey-violet-black
  35. green-blue-black
  36. brown-blue-brown
  37. 710
  38. 9.9
  39. 980
  40. red-black-black

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