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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 230 · 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 orange stand for?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  3. 3.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) red-violet-orange (b) red-violet-red (c) violet-red-orange (d) red-violet-yellow
  5. 5.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands green, blue, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 In the resistor colour code, which number does grey stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) green-grey-orange (b) grey-green-yellow (c) grey-green-red (d) grey-green-orange
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) blue-red-yellow (b) blue-red-orange (c) blue-red-red (d) red-blue-orange
  11. 11.🌈 In the resistor colour code, which number does white stand for?
  12. 12.🌈 In the resistor colour code, which number does violet stand for?
  13. 13.🌈 In the resistor colour code, which number does red stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) red-green-yellow (b) red-green-red (c) green-red-orange (d) red-green-orange
  15. 15.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 550 Ω resistor? (a) green-green-black (b) green-green-brown (c) green-green-red (d) green-blue-brown
  19. 19.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
  21. 21.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95000 Ω resistor? (a) white-green-orange (b) green-white-orange (c) white-green-yellow (d) white-green-red
  23. 23.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) brown-violet-red (b) brown-violet-black (c) violet-brown-brown (d) brown-violet-brown
  28. 28.🌈 A resistor has the colour bands green, yellow, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands grey, blue, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) brown-yellow-black (b) green-brown-black (c) yellow-brown-black (d) yellow-brown-brown
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-brown (b) red-brown-black (c) brown-red-black (d) orange-brown-black
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4700 Ω resistor? (a) yellow-violet-orange (b) violet-yellow-red (c) yellow-violet-brown (d) yellow-violet-red
  38. 38.🌈 A resistor has the colour bands brown, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does brown stand for?

Answer key

  1. 3
  2. 5 %
  3. 7.8
  4. red-violet-orange
  5. 2.1
  6. 5.6
  7. 44
  8. 8
  9. grey-green-orange
  10. blue-red-orange
  11. 9
  12. 7
  13. 2
  14. red-green-orange
  15. 430
  16. 2600
  17. 410
  18. green-green-brown
  19. 590
  20. 1400
  21. the one nearest an end
  22. white-green-orange
  23. 700
  24. 8.7
  25. 6.1
  26. 820
  27. brown-violet-brown
  28. 540
  29. 54
  30. 94000
  31. 27
  32. 860
  33. 50000
  34. 78
  35. yellow-brown-black
  36. red-brown-black
  37. yellow-violet-red
  38. 130
  39. 9200
  40. 1

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