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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 467 · 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, violet, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) green-brown-brown (b) brown-green-black (c) blue-brown-black (d) green-brown-black
  7. 7.🌈 In the resistor colour code, which number does grey stand for?
  8. 8.🌈 In the resistor colour code, which number does blue stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3200 Ω resistor? (a) orange-red-orange (b) orange-red-brown (c) orange-red-red (d) red-orange-red
  10. 10.🌈 In the resistor colour code, which number does white stand for?
  11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
  12. 12.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57000 Ω resistor? (a) violet-green-orange (b) green-violet-yellow (c) green-violet-red (d) green-violet-orange
  15. 15.🌈 In the resistor colour code, which number does green stand for?
  16. 16.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the widest gap (d) the gold band
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 330 Ω resistor? (a) orange-orange-black (b) orange-orange-brown (c) orange-yellow-brown (d) orange-orange-red
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 400 Ω resistor? (a) yellow-black-red (b) yellow-black-black (c) green-yellow-brown (d) yellow-black-brown
  21. 21.🌈 A resistor has the colour bands grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands red, brown, red. 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.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 700 Ω resistor? (a) grey-violet-brown (b) violet-black-brown (c) violet-black-red (d) violet-black-black
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) yellow-red-black (b) yellow-red-brown (c) yellow-red-red (d) red-yellow-brown
  29. 29.🌈 A resistor has the colour bands violet, yellow, brown. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) orange-brown-red (b) orange-brown-orange (c) orange-brown-brown (d) brown-orange-red
  31. 31.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) brown-grey-black (b) grey-brown-brown (c) white-brown-black (d) grey-brown-black
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 46 Ω resistor? (a) blue-yellow-black (b) green-blue-black (c) yellow-blue-brown (d) yellow-blue-black
  35. 35.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 In the resistor colour code, which number does brown stand for?
  37. 37.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98000 Ω resistor? (a) white-grey-red (b) grey-white-orange (c) white-grey-orange (d) white-grey-yellow
  40. 40.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?

Answer key

  1. 2.7
  2. 720
  3. 7.2
  4. 4.1
  5. 61
  6. green-brown-black
  7. 8
  8. 6
  9. orange-red-red
  10. 9
  11. 5 %
  12. 3000
  13. 810
  14. green-violet-orange
  15. 5
  16. 45000
  17. 79
  18. the one nearest an end
  19. orange-orange-brown
  20. yellow-black-brown
  21. 800
  22. 980
  23. 2100
  24. 86
  25. 430
  26. 50
  27. violet-black-brown
  28. yellow-red-brown
  29. 740
  30. orange-brown-red
  31. 74
  32. 950
  33. grey-brown-black
  34. yellow-blue-black
  35. 4
  36. 1
  37. 21
  38. 820
  39. white-grey-orange
  40. 66

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