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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 735 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3700 Ω resistor? (a) violet-orange-red (b) orange-violet-orange (c) orange-violet-red (d) orange-violet-brown
  2. 2.🌈 In the resistor colour code, which number does green stand for?
  3. 3.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
  4. 4.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands blue, yellow, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 160 Ω resistor? (a) brown-blue-red (b) blue-brown-brown (c) brown-blue-black (d) brown-blue-brown
  11. 11.🌈 In the resistor colour code, which number does violet stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) violet-black-brown (b) violet-black-black (c) grey-black-black (d) grey-violet-black
  13. 13.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  15. 15.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does blue stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) blue-brown-yellow (b) brown-blue-orange (c) blue-brown-red (d) blue-brown-orange
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) brown-grey-red (b) grey-brown-red (c) brown-grey-brown (d) brown-grey-orange
  20. 20.🌈 A resistor has the colour bands yellow, white, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands grey, blue, 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 grey, black, red. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does white stand for?
  28. 28.🌈 In the resistor colour code, which number does black stand for?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) grey-green-brown (b) green-grey-black (c) grey-green-black (d) white-green-black
  30. 30.🌈 A resistor has the colour bands violet, yellow, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands white, grey, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 In the resistor colour code, which number does brown stand for?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-red (b) red-orange-brown (c) red-orange-black (d) orange-red-brown
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1600 Ω resistor? (a) blue-brown-red (b) brown-blue-brown (c) brown-blue-red (d) brown-blue-orange
  37. 37.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-red-black (b) red-black-black (c) orange-black-black (d) red-black-brown
  39. 39.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does red stand for?

Answer key

  1. orange-violet-red
  2. 5
  3. the one nearest an end
  4. 390
  5. 510
  6. 47
  7. 63
  8. 33
  9. 6.4
  10. brown-blue-brown
  11. 7
  12. violet-black-black
  13. 600
  14. 5 %
  15. 28000
  16. 35
  17. 6
  18. blue-brown-orange
  19. brown-grey-red
  20. 49
  21. 800
  22. 76
  23. 27
  24. 8600
  25. 8
  26. 8000
  27. 9
  28. 0
  29. grey-green-black
  30. 7400
  31. 6.8
  32. 9800
  33. 960
  34. 1
  35. red-orange-brown
  36. brown-blue-red
  37. 120
  38. red-black-black
  39. 8.4
  40. 2

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