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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 302 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does blue stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-brown (b) red-green-orange (c) green-red-red (d) red-green-red
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  7. 7.🌈 In the resistor colour code, which number does green stand for?
  8. 8.🌈 In the resistor colour code, which number does orange stand for?
  9. 9.🌈 In the resistor colour code, which number does yellow stand for?
  10. 10.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 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
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 97 Ω resistor? (a) brown-violet-black (b) violet-white-black (c) white-violet-black (d) white-violet-brown
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-brown-brown (b) brown-brown-black (c) brown-red-brown (d) brown-brown-red
  15. 15.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands white, orange, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands grey, yellow, orange. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 520 Ω resistor? (a) red-green-brown (b) green-red-brown (c) green-red-black (d) green-red-red
  24. 24.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) green-brown-orange (b) green-brown-red (c) green-brown-yellow (d) brown-green-orange
  28. 28.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  29. 29.🌈 In the resistor colour code, which number does white stand for?
  30. 30.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does black stand for?
  32. 32.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands green, violet, brown. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) yellow-brown-orange (b) yellow-brown-yellow (c) yellow-brown-red (d) brown-yellow-orange
  35. 35.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 In the resistor colour code, which number does brown stand for?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 450 Ω resistor? (a) green-yellow-brown (b) yellow-green-red (c) yellow-green-black (d) yellow-green-brown
  38. 38.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?

Answer key

  1. 120
  2. 37
  3. 12
  4. 6
  5. red-green-red
  6. 5 %
  7. 5
  8. 3
  9. 4
  10. 71
  11. 7.7
  12. the one nearest an end
  13. white-violet-black
  14. brown-brown-brown
  15. 140
  16. 8500
  17. 2.2
  18. 2.6
  19. 29
  20. 6500
  21. 9.3
  22. 84000
  23. green-red-brown
  24. 92
  25. 41000
  26. 540
  27. green-brown-orange
  28. 7800
  29. 9
  30. 1700
  31. 0
  32. 66
  33. 570
  34. yellow-brown-orange
  35. 1.3
  36. 1
  37. yellow-green-brown
  38. 690
  39. 110
  40. 56000

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