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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 662 · 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.🌈 In the resistor colour code, which number does red stand for?
  2. 2.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
  3. 3.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  4. 4.🌈 In the resistor colour code, which number does yellow stand for?
  5. 5.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 25 % (d) 0 %
  7. 7.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does grey stand for?
  11. 11.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does orange stand for?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) yellow-orange-brown (b) yellow-orange-black (c) orange-yellow-black (d) green-orange-black
  16. 16.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands grey, orange, red. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-black (b) red-red-brown (c) red-orange-brown (d) red-red-red
  19. 19.🌈 In the resistor colour code, which number does blue stand for?
  20. 20.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36 Ω resistor? (a) orange-blue-black (b) blue-orange-black (c) yellow-blue-black (d) orange-blue-brown
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13000 Ω resistor? (a) brown-orange-red (b) brown-orange-yellow (c) orange-brown-orange (d) brown-orange-orange
  23. 23.🌈 A resistor has the colour bands green, green, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands yellow, grey, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83000 Ω resistor? (a) grey-orange-yellow (b) grey-orange-orange (c) orange-grey-orange (d) grey-orange-red
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4400 Ω resistor? (a) yellow-yellow-orange (b) yellow-yellow-red (c) yellow-green-red (d) yellow-yellow-brown
  28. 28.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) violet-red-red (b) red-violet-red (c) violet-red-brown (d) violet-red-orange
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7400 Ω resistor? (a) violet-yellow-brown (b) yellow-violet-red (c) violet-yellow-orange (d) violet-yellow-red
  37. 37.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does green stand for?
  39. 39.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands grey, violet, red. What is its value (in ohms)?

Answer key

  1. 2
  2. 72000
  3. the one nearest an end
  4. 4
  5. 910
  6. 5 %
  7. 32000
  8. 68
  9. 29
  10. 8
  11. 6200
  12. 90
  13. 6
  14. 3
  15. yellow-orange-black
  16. 38000
  17. 8300
  18. red-red-brown
  19. 6
  20. 72
  21. orange-blue-black
  22. brown-orange-orange
  23. 550
  24. 48
  25. 38
  26. grey-orange-orange
  27. yellow-yellow-red
  28. 7.1
  29. 15
  30. 7.6
  31. 85
  32. 70
  33. 56000
  34. 78
  35. violet-red-red
  36. violet-yellow-red
  37. 6100
  38. 5
  39. 11000
  40. 8700

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