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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 61 · 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, violet, brown. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71 Ω resistor? (a) grey-brown-black (b) violet-brown-black (c) brown-violet-black (d) violet-brown-brown
  3. 3.🌈 In the resistor colour code, which number does brown stand for?
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  5. 5.🌈 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
  6. 6.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does orange stand for?
  13. 13.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does yellow stand for?
  15. 15.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands yellow, red, black. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9600 Ω resistor? (a) blue-white-red (b) white-blue-orange (c) white-blue-brown (d) white-blue-red
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96 Ω resistor? (a) white-blue-brown (b) white-blue-black (c) brown-blue-black (d) blue-white-black
  20. 20.🌈 A resistor has the colour bands blue, green, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does violet stand for?
  23. 23.🌈 In the resistor colour code, which number does white stand for?
  24. 24.🌈 A resistor has the colour bands white, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  26. 26.🌈 In the resistor colour code, which number does red stand for?
  27. 27.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands white, grey, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands yellow, white, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) green-grey-black (b) grey-green-brown (c) grey-green-black (d) white-green-black

Answer key

  1. 770
  2. violet-brown-black
  3. 1
  4. 5 %
  5. the one nearest an end
  6. 4
  7. 170
  8. 6100
  9. 1
  10. 77
  11. 390
  12. 3
  13. 7.1
  14. 4
  15. 87000
  16. 57
  17. 42
  18. white-blue-red
  19. white-blue-black
  20. 65
  21. 52
  22. 7
  23. 9
  24. 930
  25. 56000
  26. 2
  27. 390
  28. 3600
  29. 3
  30. 29
  31. 2100
  32. 22
  33. 98
  34. 2.5
  35. 6300
  36. 49000
  37. 3.4
  38. 970
  39. 34000
  40. grey-green-black

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