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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 550 · 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.🌈 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
  2. 2.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does violet stand for?
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 530 Ω resistor? (a) green-orange-red (b) green-orange-brown (c) orange-green-brown (d) green-orange-black
  6. 6.🌈 In the resistor colour code, which number does yellow stand for?
  7. 7.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands violet, white, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) green-red-brown (b) red-green-red (c) red-green-brown (d) red-green-black
  12. 12.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) grey-violet-red (b) violet-grey-red (c) violet-grey-brown (d) violet-grey-orange
  14. 14.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does orange stand for?
  17. 17.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 In the resistor colour code, which number does brown stand for?
  19. 19.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 990 Ω resistor? (a) white-white-black (b) white-white-brown (c) white-black-brown (d) white-white-red
  25. 25.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) red-brown-black (b) brown-red-brown (c) red-red-black (d) brown-red-black
  30. 30.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does green stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76000 Ω resistor? (a) violet-blue-yellow (b) violet-blue-orange (c) blue-violet-orange (d) violet-blue-red
  33. 33.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) yellow-orange-orange (b) orange-black-red (c) orange-black-yellow (d) orange-black-orange
  35. 35.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does blue stand for?
  37. 37.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands violet, orange, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands orange, violet, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. the one nearest an end
  2. 230
  3. 7
  4. 5 %
  5. green-orange-brown
  6. 4
  7. 830
  8. 79
  9. 86
  10. 45000
  11. red-green-brown
  12. 1.2
  13. violet-grey-red
  14. 420
  15. 940
  16. 3
  17. 44
  18. 1
  19. 150
  20. 29
  21. 25000
  22. 40000
  23. 600
  24. white-white-brown
  25. 39
  26. 2.1
  27. 85
  28. 21000
  29. brown-red-black
  30. 5
  31. 5
  32. violet-blue-orange
  33. 200
  34. orange-black-orange
  35. 10
  36. 6
  37. 470
  38. 89000
  39. 73
  40. 370

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