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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 291 · 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 white, white, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  3. 3.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands blue, white, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 In the resistor colour code, which number does white stand for?
  7. 7.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) brown-black-black (b) red-black-black (c) red-brown-black (d) brown-black-brown
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
  10. 10.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4000 Ω resistor? (a) yellow-black-orange (b) yellow-black-brown (c) green-yellow-red (d) yellow-black-red
  19. 19.🌈 In the resistor colour code, which number does brown stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 670 Ω resistor? (a) blue-violet-red (b) blue-violet-brown (c) violet-blue-brown (d) blue-violet-black
  21. 21.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does grey stand for?
  23. 23.🌈 In the resistor colour code, which number does black stand for?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) grey-brown-black (b) red-grey-black (c) brown-grey-brown (d) brown-grey-black
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4100 Ω resistor? (a) yellow-brown-brown (b) brown-yellow-red (c) yellow-brown-red (d) yellow-brown-orange
  26. 26.🌈 A resistor has the colour bands grey, violet, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) violet-orange-brown (b) grey-orange-black (c) violet-orange-black (d) orange-violet-black
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82000 Ω resistor? (a) grey-red-red (b) grey-red-orange (c) red-grey-orange (d) grey-red-yellow
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75000 Ω resistor? (a) violet-green-orange (b) violet-green-red (c) violet-green-yellow (d) green-violet-orange
  31. 31.🌈 In the resistor colour code, which number does yellow stand for?
  32. 32.🌈 In the resistor colour code, which number does orange stand for?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 460 Ω resistor? (a) yellow-blue-black (b) yellow-blue-red (c) blue-yellow-brown (d) yellow-blue-brown
  34. 34.🌈 In the resistor colour code, which number does blue stand for?
  35. 35.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9200 Ω resistor? (a) white-red-red (b) red-white-red (c) white-red-brown (d) white-red-orange
  37. 37.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) green-black-black (b) green-yellow-black (c) yellow-black-brown (d) yellow-black-black
  40. 40.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 990
  2. the one nearest an end
  3. 6.3
  4. 290
  5. 69
  6. 9
  7. 39
  8. brown-black-black
  9. 5 %
  10. 14000
  11. 79
  12. 6400
  13. 63000
  14. 320
  15. 1800
  16. 8500
  17. 810
  18. yellow-black-red
  19. 1
  20. blue-violet-brown
  21. 61
  22. 8
  23. 0
  24. brown-grey-black
  25. yellow-brown-red
  26. 87
  27. 400
  28. violet-orange-black
  29. grey-red-orange
  30. violet-green-orange
  31. 4
  32. 3
  33. yellow-blue-brown
  34. 6
  35. 830
  36. white-red-red
  37. 97
  38. 4.8
  39. yellow-black-black
  40. 2.3

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