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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 373 · 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 red stand for?
  2. 2.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does blue stand for?
  4. 4.🌈 A resistor has the colour bands violet, grey, orange. What is its value (in ohms)?
  5. 5.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) white-orange-brown (b) white-orange-black (c) orange-white-black (d) brown-orange-black
  7. 7.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52000 Ω resistor? (a) red-green-orange (b) green-red-red (c) green-red-yellow (d) green-red-orange
  9. 9.🌈 A resistor has the colour bands violet, white, orange. What is its value (in ohms)?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  11. 11.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57000 Ω resistor? (a) green-violet-red (b) violet-green-orange (c) green-violet-yellow (d) green-violet-orange
  13. 13.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands violet, white, red. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) red-brown-red (b) brown-black-red (c) brown-black-brown (d) brown-black-orange
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) grey-blue-black (b) violet-blue-black (c) violet-blue-brown (d) blue-violet-black
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39 Ω resistor? (a) white-orange-black (b) orange-white-brown (c) yellow-white-black (d) orange-white-black
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5100 Ω resistor? (a) green-brown-red (b) green-brown-orange (c) green-brown-brown (d) brown-green-red
  19. 19.🌈 A resistor has the colour bands yellow, brown, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 17 Ω resistor? (a) brown-violet-black (b) red-violet-black (c) brown-violet-brown (d) violet-brown-black
  24. 24.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44000 Ω resistor? (a) yellow-yellow-yellow (b) yellow-yellow-orange (c) yellow-yellow-red (d) yellow-green-orange
  26. 26.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) green-violet-black (b) violet-yellow-black (c) yellow-violet-black (d) yellow-violet-brown
  28. 28.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands green, orange, brown. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does orange stand for?
  32. 32.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 In the resistor colour code, which number does white stand for?
  35. 35.🌈 A resistor has the colour bands white, white, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands brown, orange, orange. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) yellow-grey-red (b) yellow-grey-orange (c) yellow-grey-brown (d) grey-yellow-red
  38. 38.🌈 A resistor has the colour bands white, orange, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) green-grey-black (b) blue-grey-black (c) grey-green-black (d) green-grey-brown
  40. 40.🌈 In the resistor colour code, which number does green stand for?

Answer key

  1. 2
  2. 310
  3. 6
  4. 78000
  5. the one nearest an end
  6. white-orange-black
  7. 10
  8. green-red-orange
  9. 79000
  10. 5 %
  11. 21
  12. green-violet-orange
  13. 14
  14. 7900
  15. brown-black-red
  16. violet-blue-black
  17. orange-white-black
  18. green-brown-red
  19. 4100
  20. 22
  21. 210
  22. 900
  23. brown-violet-black
  24. 56
  25. yellow-yellow-orange
  26. 6300
  27. yellow-violet-black
  28. 7.7
  29. 4
  30. 530
  31. 3
  32. 32
  33. 450
  34. 9
  35. 990
  36. 13000
  37. yellow-grey-red
  38. 93
  39. green-grey-black
  40. 5

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