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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 469 · 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 violet, white, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 97 Ω resistor? (a) violet-white-black (b) white-violet-black (c) brown-violet-black (d) white-violet-brown
  4. 4.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands violet, grey, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands violet, green, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
  8. 8.🌈 A resistor has the colour bands green, green, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does white stand for?
  10. 10.🌈 In the resistor colour code, which number does violet stand for?
  11. 11.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40000 Ω resistor? (a) yellow-black-yellow (b) yellow-black-orange (c) yellow-black-red (d) green-yellow-orange
  13. 13.🌈 A resistor has the colour bands green, violet, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands violet, violet, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
  16. 16.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  17. 17.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 In the resistor colour code, which number does orange stand for?
  20. 20.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does yellow stand for?
  22. 22.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does red stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) grey-green-brown (b) green-grey-black (c) white-green-black (d) grey-green-black
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) brown-green-yellow (b) brown-green-orange (c) brown-green-red (d) green-brown-orange
  27. 27.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands green, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 680 Ω resistor? (a) blue-grey-black (b) blue-grey-red (c) blue-grey-brown (d) grey-blue-brown
  35. 35.🌈 In the resistor colour code, which number does grey stand for?
  36. 36.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4000 Ω resistor? (a) yellow-black-orange (b) green-yellow-red (c) yellow-black-brown (d) yellow-black-red
  38. 38.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does black stand for?

Answer key

  1. 79000
  2. 5.2
  3. white-violet-black
  4. 2.8
  5. 78000
  6. 7.5
  7. the one nearest an end
  8. 550
  9. 9
  10. 7
  11. 1.8
  12. yellow-black-orange
  13. 57
  14. 770
  15. 8200
  16. 5 %
  17. 67
  18. 960
  19. 3
  20. 230
  21. 4
  22. 85
  23. 3000
  24. 2
  25. grey-green-black
  26. brown-green-orange
  27. 660
  28. 530
  29. 8.2
  30. 22
  31. 6.9
  32. 9000
  33. 740
  34. blue-grey-brown
  35. 8
  36. 100
  37. yellow-black-red
  38. 13
  39. 1
  40. 0

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