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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 297 · 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.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 640 Ω resistor? (a) blue-yellow-black (b) blue-yellow-brown (c) blue-yellow-red (d) yellow-blue-brown
  4. 4.🌈 A resistor has the colour bands grey, blue, orange. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does yellow stand for?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) orange-orange-black (b) orange-red-black (c) red-orange-black (d) red-orange-brown
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-orange (b) red-red-red (c) red-orange-red (d) red-red-brown
  8. 8.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does orange stand for?
  11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  12. 12.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  13. 13.🌈 In the resistor colour code, which number does white stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) red-brown-red (b) red-brown-brown (c) red-brown-orange (d) brown-red-red
  15. 15.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) orange-violet-orange (b) violet-orange-orange (c) orange-violet-yellow (d) orange-violet-red
  17. 17.🌈 In the resistor colour code, which number does violet stand for?
  18. 18.🌈 A resistor has the colour bands orange, blue, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) red-blue-orange (b) blue-red-orange (c) blue-red-yellow (d) blue-red-red
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64000 Ω resistor? (a) blue-yellow-yellow (b) blue-yellow-orange (c) yellow-blue-orange (d) blue-yellow-red
  22. 22.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands green, orange, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands red, black, 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 ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-brown-brown (b) brown-red-red (c) brown-brown-red (d) brown-brown-orange
  28. 28.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, orange, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands yellow, violet, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands brown, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 730 Ω resistor? (a) orange-violet-brown (b) violet-orange-brown (c) violet-orange-red (d) violet-orange-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67 Ω resistor? (a) blue-violet-brown (b) violet-blue-black (c) violet-violet-black (d) blue-violet-black
  40. 40.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?

Answer key

  1. 790
  2. 3.6
  3. blue-yellow-brown
  4. 86000
  5. 4
  6. red-orange-black
  7. red-red-red
  8. 110
  9. 27
  10. 3
  11. 5 %
  12. the one nearest an end
  13. 9
  14. red-brown-red
  15. 1.8
  16. orange-violet-orange
  17. 7
  18. 36000
  19. 96
  20. blue-red-orange
  21. blue-yellow-orange
  22. 18000
  23. 5300
  24. 430
  25. 2
  26. 31000
  27. brown-brown-red
  28. 70
  29. 50000
  30. 1300
  31. 16
  32. 46
  33. 61000
  34. 67
  35. 47
  36. 140
  37. 370
  38. violet-orange-brown
  39. blue-violet-black
  40. 49

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