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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 621 · 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.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  2. 2.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) brown-red-orange (b) red-brown-yellow (c) red-brown-red (d) red-brown-orange
  5. 5.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 In the resistor colour code, which number does blue stand for?
  7. 7.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) brown-black-orange (b) brown-black-brown (c) red-brown-red (d) brown-black-red
  17. 17.🌈 A resistor has the colour bands grey, grey, brown. What is its value (in ohms)?
  18. 18.🌈 In the resistor colour code, which number does yellow stand for?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83000 Ω resistor? (a) grey-orange-yellow (b) grey-orange-red (c) orange-grey-orange (d) grey-orange-orange
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9300 Ω resistor? (a) orange-white-red (b) white-orange-brown (c) white-orange-red (d) white-orange-orange
  21. 21.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90000 Ω resistor? (a) white-black-red (b) brown-white-orange (c) white-black-orange (d) white-black-yellow
  24. 24.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands orange, green, brown. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 630 Ω resistor? (a) blue-orange-black (b) blue-orange-brown (c) orange-blue-brown (d) blue-orange-red
  28. 28.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) brown-black-red (b) red-brown-orange (c) brown-black-yellow (d) brown-black-orange
  33. 33.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4200 Ω resistor? (a) red-yellow-red (b) yellow-red-orange (c) yellow-red-brown (d) yellow-red-red
  35. 35.🌈 In the resistor colour code, which number does black stand for?
  36. 36.🌈 In the resistor colour code, which number does violet stand for?
  37. 37.🌈 In the resistor colour code, which number does green stand for?
  38. 38.🌈 A resistor has the colour bands green, orange, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 710 Ω resistor? (a) violet-brown-brown (b) violet-brown-red (c) violet-brown-black (d) brown-violet-brown

Answer key

  1. 5 %
  2. 2.1
  3. the one nearest an end
  4. red-brown-orange
  5. 2
  6. 6
  7. 4.1
  8. 3
  9. 640
  10. 78
  11. 61
  12. 6100
  13. 840
  14. 81000
  15. 6.5
  16. brown-black-red
  17. 880
  18. 4
  19. grey-orange-orange
  20. white-orange-red
  21. 31
  22. 53000
  23. white-black-orange
  24. 23000
  25. 51
  26. 350
  27. blue-orange-brown
  28. 500
  29. 180
  30. 970
  31. 10
  32. brown-black-orange
  33. 2.6
  34. yellow-red-red
  35. 0
  36. 7
  37. 5
  38. 5300
  39. 7.8
  40. violet-brown-brown

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