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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 979 · 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 white, violet, red. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does green stand for?
  3. 3.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89 Ω resistor? (a) grey-white-brown (b) white-grey-black (c) white-white-black (d) grey-white-black
  5. 5.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) grey-orange-black (b) yellow-grey-black (c) orange-grey-black (d) orange-grey-brown
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78000 Ω resistor? (a) grey-violet-orange (b) violet-grey-yellow (c) violet-grey-orange (d) violet-grey-red
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  9. 9.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) the gold band (d) any band
  10. 10.🌈 In the resistor colour code, which number does black stand for?
  11. 11.🌈 In the resistor colour code, which number does brown stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4100 Ω resistor? (a) brown-yellow-red (b) yellow-brown-brown (c) yellow-brown-orange (d) yellow-brown-red
  13. 13.🌈 In the resistor colour code, which number does blue stand for?
  14. 14.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
  18. 18.🌈 In the resistor colour code, which number does yellow stand for?
  19. 19.🌈 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
  20. 20.🌈 A resistor has the colour bands blue, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) brown-green-red (b) brown-green-orange (c) brown-green-yellow (d) green-brown-orange
  25. 25.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  26. 26.🌈 In the resistor colour code, which number does orange stand for?
  27. 27.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands yellow, white, orange. What is its value (in ohms)?
  30. 30.🌈 In the resistor colour code, which number does red stand for?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 560 Ω resistor? (a) green-blue-red (b) blue-green-brown (c) green-blue-brown (d) green-blue-black
  32. 32.🌈 A resistor has the colour bands green, violet, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) red-yellow-orange (b) yellow-red-yellow (c) yellow-red-red (d) yellow-red-orange
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) green-violet-black (b) yellow-violet-brown (c) yellow-violet-black (d) violet-yellow-black
  35. 35.🌈 In the resistor colour code, which number does grey stand for?
  36. 36.🌈 In the resistor colour code, which number does white stand for?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59000 Ω resistor? (a) white-green-orange (b) green-white-red (c) green-white-yellow (d) green-white-orange
  38. 38.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81000 Ω resistor? (a) grey-brown-red (b) brown-grey-orange (c) grey-brown-yellow (d) grey-brown-orange
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6800 Ω resistor? (a) blue-grey-orange (b) grey-blue-red (c) blue-grey-brown (d) blue-grey-red

Answer key

  1. 9700
  2. 5
  3. 84
  4. grey-white-black
  5. 67
  6. orange-grey-black
  7. violet-grey-orange
  8. 5 %
  9. the one nearest an end
  10. 0
  11. 1
  12. yellow-brown-red
  13. 6
  14. 32000
  15. 3100
  16. 8.2
  17. 610
  18. 4
  19. yellow-green-brown
  20. 64
  21. 2
  22. 87000
  23. 110
  24. brown-green-orange
  25. 1000
  26. 3
  27. 5100
  28. 7800
  29. 49000
  30. 2
  31. green-blue-brown
  32. 5.7
  33. yellow-red-orange
  34. yellow-violet-black
  35. 8
  36. 9
  37. green-white-orange
  38. 50
  39. grey-brown-orange
  40. blue-grey-red

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