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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 690 · 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 28 Ω resistor? (a) grey-red-black (b) red-grey-brown (c) orange-grey-black (d) red-grey-black
  2. 2.🌈 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
  3. 3.🌈 In the resistor colour code, which number does grey stand for?
  4. 4.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 In the resistor colour code, which number does yellow stand for?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 50 % (d) 25 %
  7. 7.🌈 A resistor has the colour bands blue, grey, red. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-red (b) red-violet-black (c) red-violet-brown (d) violet-red-brown
  9. 9.🌈 In the resistor colour code, which number does green stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) yellow-brown-brown (b) brown-yellow-black (c) yellow-brown-black (d) green-brown-black
  11. 11.🌈 A resistor has the colour bands green, yellow, brown. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1300 Ω resistor? (a) brown-orange-brown (b) orange-brown-red (c) brown-orange-orange (d) brown-orange-red
  14. 14.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) red-brown-orange (b) brown-black-orange (c) brown-black-yellow (d) brown-black-red
  18. 18.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7300 Ω resistor? (a) violet-orange-red (b) orange-violet-red (c) violet-orange-brown (d) violet-orange-orange
  21. 21.🌈 In the resistor colour code, which number does black stand for?
  22. 22.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does red stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) blue-green-brown (b) violet-green-black (c) green-blue-black (d) blue-green-black
  29. 29.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands green, violet, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands violet, blue, orange. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does brown stand for?
  36. 36.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 In the resistor colour code, which number does blue stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64 Ω resistor? (a) violet-yellow-black (b) blue-yellow-brown (c) yellow-blue-black (d) blue-yellow-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 730 Ω resistor? (a) orange-violet-brown (b) violet-orange-red (c) violet-orange-black (d) violet-orange-brown
  40. 40.🌈 A resistor has the colour bands brown, yellow, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. red-grey-black
  2. the one nearest an end
  3. 8
  4. 2.3
  5. 4
  6. 5 %
  7. 6800
  8. red-violet-brown
  9. 5
  10. yellow-brown-black
  11. 540
  12. 1100
  13. brown-orange-red
  14. 190
  15. 7
  16. 300
  17. brown-black-orange
  18. 9.7
  19. 99
  20. violet-orange-red
  21. 0
  22. 66
  23. 90
  24. 730
  25. 7.9
  26. 31
  27. 2
  28. blue-green-black
  29. 83000
  30. 5.7
  31. 62000
  32. 890
  33. 66
  34. 76000
  35. 1
  36. 7.7
  37. 6
  38. blue-yellow-black
  39. violet-orange-brown
  40. 140

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