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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 476 · 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.🌈 In the resistor colour code, which number does grey stand for?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  3. 3.🌈 In the resistor colour code, which number does yellow stand for?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) red-yellow-orange (b) yellow-red-red (c) yellow-red-orange (d) yellow-red-yellow
  5. 5.🌈 A resistor has the colour bands orange, red, brown. What is its value (in ohms)?
  6. 6.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) red-orange-brown (b) orange-red-black (c) orange-orange-black (d) red-orange-black
  8. 8.🌈 In the resistor colour code, which number does brown stand for?
  9. 9.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) brown-black-black (b) white-black-black (c) brown-white-black (d) white-black-brown
  11. 11.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 410 Ω resistor? (a) brown-yellow-brown (b) yellow-brown-brown (c) yellow-brown-black (d) yellow-brown-red
  16. 16.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands yellow, black, brown. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands white, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 In the resistor colour code, which number does violet stand for?
  22. 22.🌈 A resistor has the colour bands green, green, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 In the resistor colour code, which number does orange stand for?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9200 Ω resistor? (a) red-white-red (b) white-red-orange (c) white-red-brown (d) white-red-red
  25. 25.🌈 In the resistor colour code, which number does blue stand for?
  26. 26.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands white, blue, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands yellow, green, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does red stand for?
  33. 33.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2700 Ω resistor? (a) red-violet-brown (b) red-violet-red (c) red-violet-orange (d) violet-red-red
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47000 Ω resistor? (a) yellow-violet-orange (b) yellow-violet-red (c) yellow-violet-yellow (d) violet-yellow-orange
  37. 37.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 710 Ω resistor? (a) violet-brown-red (b) brown-violet-brown (c) violet-brown-brown (d) violet-brown-black
  40. 40.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?

Answer key

  1. 8
  2. 5 %
  3. 4
  4. yellow-red-orange
  5. 320
  6. the one nearest an end
  7. red-orange-black
  8. 1
  9. 17000
  10. white-black-black
  11. 710
  12. 52
  13. 66
  14. 2.1
  15. yellow-brown-brown
  16. 610
  17. 400
  18. 320
  19. 930
  20. 4.4
  21. 7
  22. 55
  23. 3
  24. white-red-red
  25. 6
  26. 7500
  27. 9600
  28. 45
  29. 720
  30. 90
  31. 230
  32. 2
  33. 70000
  34. 830
  35. red-violet-red
  36. yellow-violet-orange
  37. 80
  38. 52000
  39. violet-brown-brown
  40. 2000

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