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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 704 · 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 grey, red, red. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does yellow stand for?
  3. 3.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  4. 4.🌈 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
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1700 Ω resistor? (a) brown-violet-orange (b) violet-brown-red (c) brown-violet-brown (d) brown-violet-red
  6. 6.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-orange (b) red-red-red (c) red-red-brown (d) red-orange-red
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  9. 9.🌈 A resistor has the colour bands violet, green, black. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 150 Ω resistor? (a) brown-green-red (b) brown-green-black (c) brown-green-brown (d) green-brown-brown
  11. 11.🌈 A resistor has the colour bands grey, green, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does grey stand for?
  15. 15.🌈 A resistor has the colour bands red, grey, red. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 100 Ω resistor? (a) brown-black-black (b) brown-black-brown (c) brown-black-red (d) red-brown-brown
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9500 Ω resistor? (a) green-white-red (b) white-green-orange (c) white-green-brown (d) white-green-red
  18. 18.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-brown (b) orange-red-brown (c) red-orange-red (d) red-orange-black
  20. 20.🌈 A resistor has the colour bands violet, white, black. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does red stand for?
  22. 22.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does brown stand for?
  24. 24.🌈 A resistor has the colour bands red, white, orange. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) brown-black-orange (b) brown-black-brown (c) brown-black-red (d) red-brown-red
  26. 26.🌈 In the resistor colour code, which number does white stand for?
  27. 27.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands grey, violet, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands green, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 In the resistor colour code, which number does violet stand for?
  35. 35.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands grey, orange, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 8200
  2. 4
  3. 1000
  4. the one nearest an end
  5. brown-violet-red
  6. 70000
  7. red-red-red
  8. 5 %
  9. 75
  10. brown-green-brown
  11. 850
  12. 7.6
  13. 99000
  14. 8
  15. 2800
  16. brown-black-brown
  17. white-green-red
  18. 170
  19. red-orange-brown
  20. 79
  21. 2
  22. 820
  23. 1
  24. 29000
  25. brown-black-red
  26. 9
  27. 5800
  28. 870
  29. 38
  30. 940
  31. 2.6
  32. 190
  33. 560
  34. 7
  35. 380
  36. 2000
  37. 180
  38. 83
  39. 500
  40. 910

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