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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 482 · 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 brown, red, black. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) white-black-brown (b) brown-black-black (c) white-black-black (d) brown-white-black
  3. 3.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands yellow, white, red. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands grey, orange, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the gold band (d) the one nearest an end
  8. 8.🌈 In the resistor colour code, which number does yellow stand for?
  9. 9.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands red, white, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  12. 12.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  13. 13.🌈 In the resistor colour code, which number does grey stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9600 Ω resistor? (a) white-blue-brown (b) blue-white-red (c) white-blue-orange (d) white-blue-red
  15. 15.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands white, orange, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 240 Ω resistor? (a) yellow-red-brown (b) red-yellow-brown (c) red-yellow-red (d) red-yellow-black
  19. 19.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands white, green, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands white, orange, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands white, black, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) brown-red-brown (b) red-red-black (c) red-brown-black (d) brown-red-black
  25. 25.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
  30. 30.🌈 In the resistor colour code, which number does violet stand for?
  31. 31.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands blue, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands violet, orange, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) white-green-black (b) grey-green-brown (c) grey-green-black (d) green-grey-black
  40. 40.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?

Answer key

  1. 12
  2. white-black-black
  3. 800
  4. 4900
  5. 83
  6. 10
  7. the one nearest an end
  8. 4
  9. 490
  10. 29000
  11. 49
  12. 5 %
  13. 8
  14. white-blue-red
  15. 220
  16. 93
  17. 22
  18. red-yellow-brown
  19. 8
  20. 3.4
  21. 95
  22. 93
  23. 900
  24. brown-red-black
  25. 3
  26. 360
  27. 52
  28. 27000
  29. 17000
  30. 7
  31. 2.6
  32. 9200
  33. 63000
  34. 410
  35. 9000
  36. 64
  37. 73
  38. 320
  39. grey-green-black
  40. 41000

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