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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 504 · 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 orange, black, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 610 Ω resistor? (a) blue-brown-brown (b) blue-brown-black (c) brown-blue-brown (d) blue-brown-red
  6. 6.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 5 % (d) 0 %
  8. 8.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) the one nearest an end (d) any band
  10. 10.🌈 A resistor has the colour bands brown, violet, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) red-black-brown (b) red-black-red (c) red-black-black (d) orange-red-brown
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59000 Ω resistor? (a) green-white-red (b) green-white-yellow (c) green-white-orange (d) white-green-orange
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 530 Ω resistor? (a) orange-green-brown (b) green-orange-brown (c) green-orange-red (d) green-orange-black
  15. 15.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does white stand for?
  17. 17.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 In the resistor colour code, which number does green stand for?
  19. 19.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands brown, blue, brown. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) brown-grey-brown (b) grey-brown-red (c) brown-grey-red (d) brown-grey-orange
  26. 26.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands grey, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does yellow stand for?
  31. 31.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 720 Ω resistor? (a) violet-red-brown (b) violet-red-black (c) violet-red-red (d) red-violet-brown
  33. 33.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands white, orange, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does orange stand for?
  37. 37.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 In the resistor colour code, which number does violet stand for?
  40. 40.🌈 A resistor has the colour bands orange, blue, orange. What is its value (in ohms)?

Answer key

  1. 30
  2. 8.3
  3. 5
  4. 200
  5. blue-brown-brown
  6. 50
  7. 5 %
  8. 410
  9. the one nearest an end
  10. 17
  11. 47
  12. red-black-brown
  13. green-white-orange
  14. green-orange-brown
  15. 68
  16. 9
  17. 51
  18. 5
  19. 810
  20. 160
  21. 1.3
  22. 43
  23. 650
  24. 86
  25. brown-grey-red
  26. 7.7
  27. 27
  28. 55
  29. 880
  30. 4
  31. 64
  32. violet-red-brown
  33. 640
  34. 93
  35. 71
  36. 3
  37. 2
  38. 6.6
  39. 7
  40. 36000

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