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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 338 · 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 grey stand for?
  2. 2.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does red stand for?
  5. 5.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does violet stand for?
  8. 8.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  10. 10.🌈 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
  11. 11.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands red, white, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  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 violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) green-brown-red (b) green-brown-brown (c) green-brown-black (d) brown-green-brown
  25. 25.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  26. 26.🌈 In the resistor colour code, which number does yellow stand for?
  27. 27.🌈 In the resistor colour code, which number does white stand for?
  28. 28.🌈 A resistor has the colour bands green, grey, brown. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) blue-brown-orange (b) brown-blue-yellow (c) brown-blue-orange (d) brown-blue-red
  30. 30.🌈 In the resistor colour code, which number does orange stand for?
  31. 31.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands orange, yellow, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands violet, orange, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 8
  2. 13
  3. 3.5
  4. 2
  5. 4.1
  6. 18
  7. 7
  8. 11000
  9. 5 %
  10. the one nearest an end
  11. 300
  12. 520
  13. 29000
  14. 86
  15. 29
  16. 10000
  17. 8.4
  18. 53
  19. 4100
  20. 760
  21. 20
  22. 35
  23. 2100
  24. green-brown-brown
  25. 11
  26. 4
  27. 9
  28. 580
  29. brown-blue-orange
  30. 3
  31. 9.6
  32. 78
  33. 42
  34. 6.5
  35. 7.7
  36. 5
  37. 340
  38. 73000
  39. 100
  40. 1.4

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