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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 743 · 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 red, black, black. What is its value (in ohms)?
  2. 2.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24 Ω resistor? (a) red-yellow-brown (b) red-yellow-black (c) orange-yellow-black (d) yellow-red-black
  4. 4.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11000 Ω resistor? (a) brown-brown-red (b) brown-brown-yellow (c) brown-brown-orange (d) brown-red-orange
  7. 7.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 50 % (d) 25 %
  10. 10.🌈 A resistor has the colour bands orange, yellow, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does white stand for?
  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 970 Ω resistor? (a) white-violet-black (b) white-violet-brown (c) white-violet-red (d) violet-white-brown
  16. 16.🌈 A resistor has the colour bands white, orange, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  19. 19.🌈 In the resistor colour code, which number does grey stand for?
  20. 20.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands brown, white, red. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) green-yellow-black (b) green-green-black (c) yellow-green-brown (d) yellow-green-black
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54000 Ω resistor? (a) green-yellow-red (b) green-yellow-orange (c) yellow-green-orange (d) green-yellow-yellow
  25. 25.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands orange, green, black. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) yellow-orange-red (b) orange-yellow-brown (c) yellow-orange-black (d) yellow-orange-brown
  28. 28.🌈 A resistor has the colour bands brown, yellow, 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 yellow, grey, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 In the resistor colour code, which number does blue stand for?
  33. 33.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 In the resistor colour code, which number does red stand for?
  37. 37.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8900 Ω resistor? (a) white-grey-red (b) grey-white-orange (c) grey-white-brown (d) grey-white-red

Answer key

  1. 20
  2. the one nearest an end
  3. red-yellow-black
  4. 3.9
  5. 420
  6. brown-brown-orange
  7. 5.2
  8. 15
  9. 5 %
  10. 34
  11. 56000
  12. 10
  13. 9
  14. 3
  15. white-violet-brown
  16. 9.3
  17. 600
  18. 22
  19. 8
  20. 87000
  21. 1.6
  22. 1900
  23. yellow-green-black
  24. green-yellow-orange
  25. 4.2
  26. 35
  27. yellow-orange-brown
  28. 14000
  29. 7
  30. 48
  31. 7.6
  32. 6
  33. 700
  34. 24
  35. 2.3
  36. 2
  37. 220
  38. 240
  39. 2.1
  40. grey-white-red

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