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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 126 · 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 yellow stand for?
  2. 2.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands orange, black, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does brown stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13 Ω resistor? (a) brown-orange-brown (b) brown-orange-black (c) orange-brown-black (d) red-orange-black
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  7. 7.🌈 In the resistor colour code, which number does green stand for?
  8. 8.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands red, grey, red. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does orange stand for?
  12. 12.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) brown-grey-black (b) white-brown-black (c) grey-brown-brown (d) grey-brown-black
  16. 16.🌈 A resistor has the colour bands blue, blue, red. What is its value (in ohms)?
  17. 17.🌈 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
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98000 Ω resistor? (a) white-grey-red (b) white-grey-orange (c) white-grey-yellow (d) grey-white-orange
  19. 19.🌈 A resistor has the colour bands orange, orange, brown. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands orange, grey, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands blue, blue, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does grey stand for?
  28. 28.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4100 Ω resistor? (a) brown-yellow-red (b) yellow-brown-brown (c) yellow-brown-orange (d) yellow-brown-red
  36. 36.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 690 Ω resistor? (a) white-blue-brown (b) blue-white-black (c) blue-white-brown (d) blue-white-red
  39. 39.🌈 In the resistor colour code, which number does white stand for?
  40. 40.🌈 A resistor has the colour bands blue, red, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 4
  2. 3700
  3. 30
  4. 1
  5. brown-orange-black
  6. 5 %
  7. 5
  8. 15
  9. 2800
  10. 8.7
  11. 3
  12. 4.1
  13. 9200
  14. 2.8
  15. grey-brown-black
  16. 6600
  17. the one nearest an end
  18. white-grey-orange
  19. 330
  20. 240
  21. 910
  22. 18000
  23. 3800
  24. 66000
  25. 23
  26. 10
  27. 8
  28. 430
  29. 35000
  30. 1.6
  31. 6200
  32. 1.7
  33. 600
  34. 970
  35. yellow-brown-red
  36. 7.7
  37. 21
  38. blue-white-brown
  39. 9
  40. 6.2

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