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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 134 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 540 Ω resistor? (a) green-yellow-brown (b) yellow-green-brown (c) green-yellow-red (d) green-yellow-black
  2. 2.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  3. 3.🌈 A resistor has the colour bands red, violet, brown. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 In the resistor colour code, which number does violet stand for?
  6. 6.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 50 % (d) 0 %
  8. 8.🌈 In the resistor colour code, which number does orange stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 130 Ω resistor? (a) brown-orange-red (b) orange-brown-brown (c) brown-orange-black (d) brown-orange-brown
  10. 10.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) yellow-red-red (b) yellow-red-orange (c) red-yellow-orange (d) yellow-red-yellow
  12. 12.🌈 In the resistor colour code, which number does white stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) green-red-black (b) orange-green-black (c) red-green-brown (d) red-green-black
  14. 14.🌈 In the resistor colour code, which number does grey stand for?
  15. 15.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does red stand for?
  22. 22.🌈 In the resistor colour code, which number does green stand for?
  23. 23.🌈 A resistor has the colour bands violet, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands red, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands red, violet, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) grey-red-red (b) red-grey-red (c) red-grey-brown (d) red-grey-orange
  32. 32.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands grey, orange, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) yellow-yellow-black (b) orange-yellow-black (c) orange-yellow-brown (d) yellow-orange-black
  35. 35.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands violet, violet, red. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does brown stand for?
  39. 39.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?

Answer key

  1. green-yellow-brown
  2. the one nearest an end
  3. 270
  4. 5.8
  5. 7
  6. 890
  7. 5 %
  8. 3
  9. brown-orange-brown
  10. 26000
  11. yellow-red-orange
  12. 9
  13. red-green-black
  14. 8
  15. 90000
  16. 780
  17. 23
  18. 2.5
  19. 680
  20. 99
  21. 2
  22. 5
  23. 74
  24. 270
  25. 820
  26. 2.1
  27. 4800
  28. 2700
  29. 8.4
  30. 84
  31. red-grey-red
  32. 6.5
  33. 83
  34. orange-yellow-black
  35. 81
  36. 760
  37. 7700
  38. 1
  39. 290
  40. 15

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