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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 699 · 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 resistor has the colour bands red, brown, orange. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-white-brown (b) white-black-red (c) white-white-orange (d) white-white-red
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5600 Ω resistor? (a) blue-green-red (b) green-blue-brown (c) green-blue-orange (d) green-blue-red
  4. 4.🌈 In the resistor colour code, which number does green stand for?
  5. 5.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does blue stand for?
  7. 7.🌈 In the resistor colour code, which number does orange stand for?
  8. 8.🌈 A resistor has the colour bands white, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands yellow, grey, black. What is its value (in ohms)?
  12. 12.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  13. 13.🌈 In the resistor colour code, which number does violet stand for?
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
  15. 15.🌈 A resistor has the colour bands yellow, white, red. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) green-grey-brown (b) green-grey-red (c) green-grey-black (d) grey-green-brown
  17. 17.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 In the resistor colour code, which number does white stand for?
  19. 19.🌈 A resistor has the colour bands blue, red, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands violet, violet, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  28. 28.🌈 In the resistor colour code, which number does grey stand for?
  29. 29.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands yellow, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 In the resistor colour code, which number does brown stand for?
  33. 33.🌈 A resistor has the colour bands brown, blue, brown. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) yellow-brown-black (b) yellow-brown-brown (c) green-brown-black (d) brown-yellow-black
  38. 38.🌈 A resistor has the colour bands yellow, red, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does black stand for?

Answer key

  1. 21000
  2. white-white-red
  3. green-blue-red
  4. 5
  5. 26
  6. 6
  7. 3
  8. 94
  9. 9.8
  10. 520
  11. 48
  12. the one nearest an end
  13. 7
  14. 5 %
  15. 4900
  16. green-grey-brown
  17. 8
  18. 9
  19. 62
  20. 5.9
  21. 6.3
  22. 50000
  23. 87000
  24. 2600
  25. 53
  26. 77
  27. 12
  28. 8
  29. 360
  30. 7.1
  31. 470
  32. 1
  33. 160
  34. 85000
  35. 1000
  36. 56000
  37. yellow-brown-black
  38. 420
  39. 110
  40. 0

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