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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 725 · 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 42000 Ω resistor? (a) yellow-red-red (b) yellow-red-yellow (c) red-yellow-orange (d) yellow-red-orange
  2. 2.🌈 In the resistor colour code, which number does blue stand for?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-brown-black (b) brown-red-brown (c) brown-brown-red (d) brown-brown-brown
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6500 Ω resistor? (a) green-blue-red (b) blue-green-red (c) blue-green-brown (d) blue-green-orange
  5. 5.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38000 Ω resistor? (a) orange-grey-yellow (b) orange-grey-orange (c) grey-orange-orange (d) orange-grey-red
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56 Ω resistor? (a) blue-green-black (b) blue-blue-black (c) green-blue-black (d) green-blue-brown
  8. 8.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  13. 13.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 25 % (d) 0 %
  14. 14.🌈 In the resistor colour code, which number does green stand for?
  15. 15.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does red stand for?
  17. 17.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5600 Ω resistor? (a) blue-green-red (b) green-blue-brown (c) green-blue-orange (d) green-blue-red
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) brown-blue-black (b) brown-blue-brown (c) red-blue-black (d) blue-brown-black
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-red (b) white-black-black (c) brown-white-brown (d) white-black-brown
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88 Ω resistor? (a) grey-white-black (b) grey-grey-black (c) grey-grey-brown (d) white-grey-black
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3700 Ω resistor? (a) orange-violet-orange (b) violet-orange-red (c) orange-violet-brown (d) orange-violet-red
  24. 24.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) red-black-red (b) red-black-orange (c) orange-red-red (d) red-black-brown
  27. 27.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-black (b) orange-brown-brown (c) brown-orange-black (d) yellow-brown-black
  29. 29.🌈 In the resistor colour code, which number does brown stand for?
  30. 30.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) brown-white-black (b) brown-black-black (c) white-black-black (d) white-black-brown
  33. 33.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands brown, green, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does white stand for?

Answer key

  1. yellow-red-orange
  2. 6
  3. brown-brown-brown
  4. blue-green-red
  5. the one nearest an end
  6. orange-grey-orange
  7. green-blue-black
  8. 8.6
  9. 63
  10. 210
  11. 50
  12. 7800
  13. 5 %
  14. 5
  15. 31
  16. 2
  17. 3600
  18. 34000
  19. green-blue-red
  20. brown-blue-black
  21. white-black-brown
  22. grey-grey-black
  23. orange-violet-red
  24. 6400
  25. 350
  26. red-black-red
  27. 23
  28. orange-brown-black
  29. 1
  30. 50
  31. 4
  32. white-black-black
  33. 9.7
  34. 60
  35. 720
  36. 150
  37. 28000
  38. 94
  39. 7.7
  40. 9

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