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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code Β· Set 1 Β· 40 questions
TalentJR

Remember (Digit, digit, zeros): black 0 Β· brown 1 Β· red 2 Β· orange 3 Β· yellow 4 Β· green 5 Β· blue 6 Β· violet 7 Β· grey 8 Β· white 9. Band 1 and band 2 = two digits; band 3 = number of zeros to add. Examples: brown-black-red = 1000 Ξ©; yellow-violet-brown = 470 Ξ©; red-red-red = 2200 Ξ© = 2.2 kΞ©.

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  1. 1.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7600 Ω resistor? (a) violet-blue-brown (b) violet-blue-red (c) blue-violet-red (d) violet-blue-orange
  2. 2.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands brown, orange, red. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6100 Ω resistor? (a) blue-brown-orange (b) blue-brown-red (c) brown-blue-red (d) blue-brown-brown
  7. 7.🌈 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
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19000 Ω resistor? (a) brown-white-red (b) brown-white-orange (c) brown-white-yellow (d) white-brown-orange
  10. 10.🌈 A resistor has the colour bands grey, blue, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does blue stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5400 Ω resistor? (a) green-yellow-orange (b) yellow-green-red (c) green-yellow-brown (d) green-yellow-red
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) brown-red-orange (b) brown-red-brown (c) brown-red-red (d) red-brown-red
  15. 15.🌈 In the resistor colour code, which number does black stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) grey-red-red (b) red-grey-brown (c) red-grey-red (d) red-grey-orange
  17. 17.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96 Ω resistor? (a) brown-blue-black (b) white-blue-black (c) white-blue-brown (d) blue-white-black
  19. 19.🌈 A resistor has the colour bands red, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 In the resistor colour code, which number does green stand for?
  21. 21.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands yellow, green, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 830 Ω resistor? (a) grey-orange-brown (b) orange-grey-brown (c) grey-orange-red (d) grey-orange-black
  27. 27.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?
  29. 29.🌈 In the resistor colour code, which number does violet stand for?
  30. 30.🌈 A resistor has the colour bands white, grey, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) yellow-grey-black (b) yellow-grey-brown (c) grey-yellow-black (d) green-grey-black
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4700 Ω resistor? (a) yellow-violet-red (b) yellow-violet-brown (c) yellow-violet-orange (d) violet-yellow-red
  33. 33.🌈 In the resistor colour code, which number does orange stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26000 Ω resistor? (a) blue-red-orange (b) red-blue-yellow (c) red-blue-red (d) red-blue-orange
  35. 35.🌈 In the resistor colour code, which number does red stand for?
  36. 36.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does white stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) white-yellow-black (b) grey-yellow-black (c) yellow-grey-black (d) grey-yellow-brown
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5300 Ω resistor? (a) green-orange-brown (b) orange-green-red (c) green-orange-orange (d) green-orange-red

Answer key

  1. violet-blue-red
  2. 120
  3. 1300
  4. 620
  5. 31
  6. blue-brown-red
  7. the one nearest an end
  8. 5 %
  9. brown-white-orange
  10. 86000
  11. 69
  12. 6
  13. green-yellow-red
  14. brown-red-red
  15. 0
  16. red-grey-red
  17. 910
  18. white-blue-black
  19. 280
  20. 5
  21. 5.9
  22. 55
  23. 2.1
  24. 67
  25. 45
  26. grey-orange-brown
  27. 5.8
  28. 89000
  29. 7
  30. 98
  31. yellow-grey-black
  32. yellow-violet-red
  33. 3
  34. red-blue-orange
  35. 2
  36. 33
  37. 40000
  38. 9
  39. grey-yellow-black
  40. green-orange-red

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