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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 424 · 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.🌈 In the resistor colour code, which number does white stand for?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65000 Ω resistor? (a) green-blue-orange (b) blue-green-red (c) blue-green-orange (d) blue-green-yellow
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7000 Ω resistor? (a) grey-violet-red (b) violet-black-orange (c) violet-black-red (d) violet-black-brown
  5. 5.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 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
  10. 10.🌈 In the resistor colour code, which number does violet stand for?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) red-violet-orange (b) violet-red-orange (c) red-violet-red (d) red-violet-yellow
  12. 12.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) brown-white-brown (b) white-black-red (c) white-black-brown (d) white-black-black
  18. 18.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 In the resistor colour code, which number does grey stand for?
  22. 22.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does red stand for?
  24. 24.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does yellow stand for?
  26. 26.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 In the resistor colour code, which number does blue stand for?
  29. 29.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands blue, green, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39 Ω resistor? (a) yellow-white-black (b) orange-white-brown (c) orange-white-black (d) white-orange-black
  34. 34.🌈 A resistor has the colour bands green, blue, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) orange-red-black (b) red-orange-black (c) orange-orange-black (d) red-orange-brown
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56000 Ω resistor? (a) green-blue-yellow (b) green-blue-orange (c) blue-green-orange (d) green-blue-red
  37. 37.🌈 In the resistor colour code, which number does orange stand for?
  38. 38.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands violet, yellow, red. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-red (b) grey-violet-brown (c) grey-violet-black (d) violet-grey-brown

Answer key

  1. 9
  2. blue-green-orange
  3. 5 %
  4. violet-black-red
  5. 170
  6. 100
  7. 10
  8. 600
  9. the one nearest an end
  10. 7
  11. red-violet-orange
  12. 42
  13. 8.1
  14. 57
  15. 70
  16. 540
  17. white-black-brown
  18. 2.6
  19. 680
  20. 1.7
  21. 8
  22. 1100
  23. 2
  24. 96
  25. 4
  26. 79
  27. 3.9
  28. 6
  29. 62000
  30. 450
  31. 650
  32. 200
  33. orange-white-black
  34. 5.6
  35. red-orange-black
  36. green-blue-orange
  37. 3
  38. 180
  39. 7400
  40. grey-violet-brown

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