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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 480 · 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, violet, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands orange, green, black. What is its value (in ohms)?
  4. 4.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  5. 5.🌈 In the resistor colour code, which number does red stand for?
  6. 6.🌈 A resistor has the colour bands green, orange, brown. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does white stand for?
  8. 8.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does black stand for?
  10. 10.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1900 Ω resistor? (a) white-brown-red (b) brown-white-brown (c) brown-white-red (d) brown-white-orange
  12. 12.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8200 Ω resistor? (a) grey-red-red (b) red-grey-red (c) grey-red-brown (d) grey-red-orange
  14. 14.🌈 In the resistor colour code, which number does violet stand for?
  15. 15.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands yellow, red, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does brown stand for?
  18. 18.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does orange stand for?
  22. 22.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does yellow stand for?
  25. 25.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-black (b) red-brown-brown (c) brown-red-red (d) brown-red-brown
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64000 Ω resistor? (a) blue-yellow-orange (b) blue-yellow-red (c) blue-yellow-yellow (d) yellow-blue-orange
  32. 32.🌈 In the resistor colour code, which number does grey stand for?
  33. 33.🌈 In the resistor colour code, which number does blue stand for?
  34. 34.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  36. 36.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) white-black-brown (b) brown-black-black (c) brown-white-black (d) white-black-black
  38. 38.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9000 Ω resistor? (a) white-black-red (b) brown-white-red (c) white-black-orange (d) white-black-brown
  40. 40.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value (in ohms)?

Answer key

  1. 17
  2. 42
  3. 35
  4. the one nearest an end
  5. 2
  6. 530
  7. 9
  8. 13
  9. 0
  10. 350
  11. brown-white-red
  12. 81
  13. grey-red-red
  14. 7
  15. 100
  16. 420
  17. 1
  18. 46
  19. 25
  20. 170
  21. 3
  22. 430
  23. 430
  24. 4
  25. 8.5
  26. 31
  27. 7000
  28. 52000
  29. 200
  30. brown-red-brown
  31. blue-yellow-orange
  32. 8
  33. 6
  34. 6.7
  35. 5 %
  36. 1.2
  37. white-black-black
  38. 86
  39. white-black-red
  40. 44000

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