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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 432 · 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.

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  1. 1.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) brown-grey-black (b) grey-brown-brown (c) brown-grey-red (d) brown-grey-brown
  2. 2.🌈 A resistor has the colour bands violet, orange, red. What is its value (in ohms)?
  3. 3.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
  4. 4.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands grey, green, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  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.🌈 In the resistor colour code, which number does blue stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 650 Ω resistor? (a) green-blue-brown (b) blue-green-red (c) blue-green-black (d) blue-green-brown
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) brown-red-black (b) orange-brown-black (c) red-brown-brown (d) red-brown-black
  12. 12.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands violet, red, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26000 Ω resistor? (a) red-blue-orange (b) red-blue-yellow (c) red-blue-red (d) blue-red-orange
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53 Ω resistor? (a) green-orange-brown (b) green-orange-black (c) orange-green-black (d) blue-orange-black
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33000 Ω resistor? (a) orange-orange-red (b) orange-orange-orange (c) orange-yellow-orange (d) orange-orange-yellow
  22. 22.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does grey stand for?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 990 Ω resistor? (a) white-black-brown (b) white-white-red (c) white-white-brown (d) white-white-black
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4400 Ω resistor? (a) yellow-yellow-red (b) yellow-yellow-orange (c) yellow-yellow-brown (d) yellow-green-red
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) blue-brown-brown (b) violet-brown-black (c) blue-brown-black (d) brown-blue-black
  27. 27.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  28. 28.🌈 In the resistor colour code, which number does black stand for?
  29. 29.🌈 In the resistor colour code, which number does white stand for?
  30. 30.🌈 In the resistor colour code, which number does green stand for?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79000 Ω resistor? (a) violet-white-orange (b) white-violet-orange (c) violet-white-yellow (d) violet-white-red
  32. 32.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands yellow, blue, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) yellow-orange-red (b) orange-yellow-red (c) orange-yellow-brown (d) orange-yellow-orange
  35. 35.🌈 A resistor has the colour bands green, green, orange. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) brown-black-orange (b) red-brown-orange (c) brown-black-red (d) brown-black-yellow
  37. 37.🌈 A resistor has the colour bands blue, black, brown. 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 orange, yellow, brown. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-orange-brown (b) orange-orange-orange (c) orange-yellow-red (d) orange-orange-red

Answer key

  1. brown-grey-brown
  2. 7300
  3. the one nearest an end
  4. 83000
  5. 46
  6. 85
  7. 910
  8. 5 %
  9. 6
  10. blue-green-brown
  11. red-brown-black
  12. 9200
  13. 420
  14. 59
  15. 7200
  16. 6.8
  17. 22000
  18. 61000
  19. red-blue-orange
  20. green-orange-black
  21. orange-orange-orange
  22. 6100
  23. 8
  24. white-white-brown
  25. yellow-yellow-red
  26. blue-brown-black
  27. 120
  28. 0
  29. 9
  30. 5
  31. violet-white-orange
  32. 210
  33. 46
  34. orange-yellow-red
  35. 55000
  36. brown-black-orange
  37. 600
  38. 1
  39. 340
  40. orange-orange-red

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