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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 240 · 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 blue, blue, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 5 % (d) 0 %
  3. 3.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands yellow, orange, red. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does black stand for?
  7. 7.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does brown stand for?
  10. 10.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) the gold band (d) any band
  12. 12.🌈 In the resistor colour code, which number does yellow stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6800 Ω resistor? (a) grey-blue-red (b) blue-grey-orange (c) blue-grey-red (d) blue-grey-brown
  14. 14.🌈 A resistor has the colour bands blue, orange, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) violet-blue-red (b) violet-blue-black (c) blue-violet-brown (d) violet-blue-brown
  17. 17.🌈 In the resistor colour code, which number does white stand for?
  18. 18.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands white, red, orange. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does grey stand for?
  22. 22.🌈 A resistor has the colour bands red, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71 Ω resistor? (a) grey-brown-black (b) violet-brown-brown (c) violet-brown-black (d) brown-violet-black
  26. 26.🌈 A resistor has the colour bands green, yellow, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands brown, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) red-orange-red (b) orange-red-orange (c) red-orange-orange (d) red-orange-yellow
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) brown-grey-red (b) brown-grey-black (c) grey-brown-brown (d) brown-grey-brown
  31. 31.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands green, blue, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands brown, white, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18000 Ω resistor? (a) grey-brown-orange (b) brown-grey-red (c) brown-grey-orange (d) brown-grey-yellow
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 400 Ω resistor? (a) yellow-black-black (b) green-yellow-brown (c) yellow-black-brown (d) yellow-black-red
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64 Ω resistor? (a) violet-yellow-black (b) yellow-blue-black (c) blue-yellow-brown (d) blue-yellow-black
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95 Ω resistor? (a) brown-green-black (b) green-white-black (c) white-green-brown (d) white-green-black

Answer key

  1. 6.6
  2. 5 %
  3. 55
  4. 44
  5. 4300
  6. 0
  7. 7000
  8. 8000
  9. 1
  10. 3.2
  11. the one nearest an end
  12. 4
  13. blue-grey-red
  14. 630
  15. 870
  16. violet-blue-brown
  17. 9
  18. 210
  19. 92000
  20. 20
  21. 8
  22. 270
  23. 10000
  24. 90000
  25. violet-brown-black
  26. 5400
  27. 22000
  28. 140
  29. red-orange-orange
  30. brown-grey-brown
  31. 22
  32. 4.1
  33. 18
  34. 56
  35. 44
  36. 1.9
  37. brown-grey-orange
  38. yellow-black-brown
  39. blue-yellow-black
  40. white-green-black

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