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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 731 · 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.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83 Ω resistor? (a) orange-grey-black (b) grey-orange-brown (c) grey-orange-black (d) white-orange-black
  3. 3.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the widest gap (d) the one nearest an end
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  5. 5.🌈 A resistor has the colour bands grey, green, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 In the resistor colour code, which number does orange stand for?
  7. 7.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78000 Ω resistor? (a) violet-grey-red (b) grey-violet-orange (c) violet-grey-yellow (d) violet-grey-orange
  9. 9.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29000 Ω resistor? (a) red-white-yellow (b) red-white-red (c) red-white-orange (d) white-red-orange
  12. 12.🌈 In the resistor colour code, which number does red stand for?
  13. 13.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands orange, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does blue stand for?
  17. 17.🌈 A resistor has the colour bands orange, yellow, brown. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) red-black-brown (b) orange-red-black (c) red-black-black (d) orange-black-black
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) green-grey-black (b) grey-green-brown (c) grey-green-black (d) white-green-black
  20. 20.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does black stand for?
  24. 24.🌈 In the resistor colour code, which number does green stand for?
  25. 25.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  26. 26.🌈 In the resistor colour code, which number does grey stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 320 Ω resistor? (a) orange-red-black (b) red-orange-brown (c) orange-red-red (d) orange-red-brown
  28. 28.🌈 A resistor has the colour bands brown, white, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands brown, orange, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) brown-black-red (b) red-brown-orange (c) brown-black-orange (d) brown-black-yellow
  32. 32.🌈 A resistor has the colour bands brown, white, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands white, orange, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49000 Ω resistor? (a) yellow-white-red (b) white-yellow-orange (c) yellow-white-yellow (d) yellow-white-orange
  40. 40.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?

Answer key

  1. 13
  2. grey-orange-black
  3. the one nearest an end
  4. 5 %
  5. 85
  6. 3
  7. 60
  8. violet-grey-orange
  9. 430
  10. 8100
  11. red-white-orange
  12. 2
  13. 21
  14. 310
  15. 510
  16. 6
  17. 340
  18. red-black-black
  19. grey-green-black
  20. 20
  21. 1
  22. 670
  23. 0
  24. 5
  25. 29
  26. 8
  27. orange-red-brown
  28. 1900
  29. 1300
  30. 720
  31. brown-black-orange
  32. 19000
  33. 8000
  34. 83000
  35. 2.5
  36. 9.3
  37. 8.6
  38. 910
  39. yellow-white-orange
  40. 37

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