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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 828 · 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) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  2. 2.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands yellow, red, orange. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does white stand for?
  5. 5.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 490 Ω resistor? (a) yellow-white-black (b) yellow-white-brown (c) yellow-white-red (d) white-yellow-brown
  10. 10.🌈 In the resistor colour code, which number does grey stand for?
  11. 11.🌈 In the resistor colour code, which number does yellow stand for?
  12. 12.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) grey-green-black (b) blue-grey-black (c) green-grey-brown (d) green-grey-black
  15. 15.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
  16. 16.🌈 In the resistor colour code, which number does brown stand for?
  17. 17.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43000 Ω resistor? (a) yellow-orange-red (b) yellow-orange-orange (c) yellow-orange-yellow (d) orange-yellow-orange
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88 Ω resistor? (a) white-grey-black (b) grey-white-black (c) grey-grey-brown (d) grey-grey-black
  20. 20.🌈 In the resistor colour code, which number does violet stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 660 Ω resistor? (a) blue-blue-brown (b) blue-blue-red (c) blue-blue-black (d) blue-violet-brown
  22. 22.🌈 A resistor has the colour bands green, violet, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 820 Ω resistor? (a) grey-red-brown (b) grey-red-black (c) grey-red-red (d) red-grey-brown
  24. 24.🌈 In the resistor colour code, which number does orange stand for?
  25. 25.🌈 A resistor has the colour bands orange, green, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands yellow, violet, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands white, grey, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, green, yellow. 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 grey, green, black. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 880 Ω resistor? (a) grey-grey-red (b) grey-grey-black (c) grey-white-brown (d) grey-grey-brown
  35. 35.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands green, green, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands violet, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57000 Ω resistor? (a) green-violet-yellow (b) violet-green-orange (c) green-violet-red (d) green-violet-orange
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96 Ω resistor? (a) white-blue-black (b) white-blue-brown (c) brown-blue-black (d) blue-white-black
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-yellow-brown (b) yellow-yellow-black (c) green-yellow-black (d) yellow-green-black

Answer key

  1. the one nearest an end
  2. 7000
  3. 42000
  4. 9
  5. 730
  6. 37
  7. 5000
  8. 7800
  9. yellow-white-brown
  10. 8
  11. 4
  12. 70000
  13. 71000
  14. green-grey-black
  15. 5 %
  16. 1
  17. 38000
  18. yellow-orange-orange
  19. grey-grey-black
  20. 7
  21. blue-blue-brown
  22. 5.7
  23. grey-red-brown
  24. 3
  25. 350
  26. 50
  27. 47
  28. 7500
  29. 89000
  30. 98
  31. 250
  32. 6
  33. 85
  34. grey-grey-brown
  35. 47
  36. 550
  37. 770
  38. green-violet-orange
  39. white-blue-black
  40. yellow-yellow-black

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