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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 632 · 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 680 Ω resistor? (a) grey-blue-brown (b) blue-grey-black (c) blue-grey-red (d) blue-grey-brown
  2. 2.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90000 Ω resistor? (a) white-black-orange (b) brown-white-orange (c) white-black-yellow (d) white-black-red
  5. 5.🌈 In the resistor colour code, which number does grey stand for?
  6. 6.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the gold band (d) the widest gap
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) red-violet-red (b) red-violet-yellow (c) red-violet-orange (d) violet-red-orange
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) red-grey-black (b) red-grey-brown (c) orange-grey-black (d) grey-red-black
  10. 10.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-orange-brown (b) orange-orange-orange (c) orange-orange-red (d) orange-yellow-red
  13. 13.🌈 A resistor has the colour bands yellow, blue, orange. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27 Ω resistor? (a) orange-violet-black (b) violet-red-black (c) red-violet-brown (d) red-violet-black
  15. 15.🌈 A resistor has the colour bands blue, green, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands yellow, violet, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does blue stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9200 Ω resistor? (a) white-red-red (b) red-white-red (c) white-red-brown (d) white-red-orange
  22. 22.🌈 A resistor has the colour bands green, white, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 In the resistor colour code, which number does orange stand for?
  24. 24.🌈 In the resistor colour code, which number does violet stand for?
  25. 25.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands orange, red, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) red-grey-red (b) grey-red-red (c) red-grey-brown (d) red-grey-orange
  32. 32.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands yellow, blue, brown. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands green, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58000 Ω resistor? (a) green-grey-orange (b) green-grey-yellow (c) green-grey-red (d) grey-green-orange
  39. 39.🌈 In the resistor colour code, which number does red stand for?
  40. 40.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?

Answer key

  1. blue-grey-brown
  2. 3700
  3. 5 %
  4. white-black-orange
  5. 8
  6. 5
  7. the one nearest an end
  8. red-violet-orange
  9. red-grey-black
  10. 310
  11. 7.6
  12. orange-orange-red
  13. 46000
  14. red-violet-black
  15. 65000
  16. 4.7
  17. 430
  18. 90
  19. 3200
  20. 6
  21. white-red-red
  22. 59
  23. 3
  24. 7
  25. 22
  26. 320
  27. 180
  28. 78
  29. 4
  30. 120
  31. red-grey-red
  32. 96
  33. 340
  34. 460
  35. 4200
  36. 530
  37. 34
  38. green-grey-orange
  39. 2
  40. 23

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