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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 714 · 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.

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  1. 1.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  4. 4.🌈 In the resistor colour code, which number does white stand for?
  5. 5.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands yellow, green, red. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  8. 8.🌈 In the resistor colour code, which number does black stand for?
  9. 9.🌈 A resistor has the colour bands white, violet, orange. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4100 Ω resistor? (a) yellow-brown-brown (b) yellow-brown-red (c) yellow-brown-orange (d) brown-yellow-red
  11. 11.🌈 A resistor has the colour bands yellow, black, brown. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) brown-green-orange (b) green-brown-orange (c) brown-green-red (d) brown-green-yellow
  13. 13.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
  14. 14.🌈 In the resistor colour code, which number does green stand for?
  15. 15.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36000 Ω resistor? (a) orange-blue-orange (b) orange-blue-red (c) blue-orange-orange (d) orange-blue-yellow
  18. 18.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does red stand for?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53 Ω resistor? (a) orange-green-black (b) green-orange-black (c) green-orange-brown (d) blue-orange-black
  23. 23.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does grey stand for?
  26. 26.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) blue-green-orange (b) green-black-red (c) green-black-yellow (d) green-black-orange
  29. 29.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does yellow stand for?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) red-brown-black (b) brown-black-black (c) red-black-black (d) brown-black-brown
  32. 32.🌈 In the resistor colour code, which number does violet stand for?
  33. 33.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) green-green-black (b) yellow-green-black (c) green-yellow-black (d) yellow-green-brown
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19000 Ω resistor? (a) brown-white-red (b) brown-white-yellow (c) brown-white-orange (d) white-brown-orange
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) blue-brown-black (b) violet-brown-black (c) blue-brown-brown (d) brown-blue-black
  40. 40.🌈 A resistor has the colour bands white, green, black. What is its value (in ohms)?

Answer key

  1. 2.4
  2. 2000
  3. 5 %
  4. 9
  5. 300
  6. 4500
  7. 78
  8. 0
  9. 97000
  10. yellow-brown-red
  11. 400
  12. brown-green-orange
  13. the one nearest an end
  14. 5
  15. 210
  16. 17
  17. orange-blue-orange
  18. 190
  19. 570
  20. 19
  21. 2
  22. green-orange-black
  23. 120
  24. 6300
  25. 8
  26. 5700
  27. 2.7
  28. green-black-orange
  29. 8.2
  30. 4
  31. brown-black-black
  32. 7
  33. 4200
  34. 2.6
  35. 5.2
  36. 99
  37. yellow-green-black
  38. brown-white-orange
  39. blue-brown-black
  40. 95

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