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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 237 · 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 blue stand for?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
  3. 3.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) brown-orange-black (b) white-orange-brown (c) white-orange-black (d) orange-white-black
  7. 7.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) the widest gap (d) any band
  8. 8.🌈 A resistor has the colour bands green, violet, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does white stand for?
  10. 10.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) green-red-orange (b) red-green-orange (c) red-green-yellow (d) red-green-red
  13. 13.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 610 Ω resistor? (a) blue-brown-red (b) blue-brown-black (c) blue-brown-brown (d) brown-blue-brown
  16. 16.🌈 A resistor has the colour bands violet, yellow, red. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) white-grey-black (b) white-grey-red (c) white-grey-brown (d) grey-white-brown
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 150 Ω resistor? (a) brown-green-brown (b) green-brown-brown (c) brown-green-red (d) brown-green-black
  19. 19.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) orange-yellow-brown (b) yellow-orange-red (c) yellow-orange-black (d) yellow-orange-brown
  26. 26.🌈 A resistor has the colour bands green, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92 Ω resistor? (a) white-red-brown (b) red-white-black (c) white-red-black (d) brown-red-black
  28. 28.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36 Ω resistor? (a) orange-blue-black (b) yellow-blue-black (c) orange-blue-brown (d) blue-orange-black
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) red-black-black (b) orange-black-black (c) red-black-brown (d) orange-red-black
  31. 31.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, white, orange. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does yellow stand for?
  35. 35.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) brown-grey-red (b) brown-grey-black (c) brown-grey-brown (d) grey-brown-brown
  39. 39.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does grey stand for?

Answer key

  1. 6
  2. 5 %
  3. 11000
  4. 2
  5. 44
  6. white-orange-black
  7. the one nearest an end
  8. 5.7
  9. 9
  10. 7.8
  11. 5.5
  12. red-green-orange
  13. 400
  14. 950
  15. blue-brown-brown
  16. 7400
  17. white-grey-brown
  18. brown-green-brown
  19. 62000
  20. 2400
  21. 8.9
  22. 64
  23. 82
  24. 22000
  25. yellow-orange-brown
  26. 560
  27. white-red-black
  28. 4.8
  29. orange-blue-black
  30. red-black-black
  31. 57
  32. 9900
  33. 29000
  34. 4
  35. 7.4
  36. 69
  37. 690
  38. brown-grey-brown
  39. 33
  40. 8

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