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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 615 · 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 resistor has the colour bands white, black, red. What is its value (in ohms)?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  3. 3.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) yellow-red-brown (b) green-red-black (c) red-yellow-black (d) yellow-red-black
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) yellow-black-brown (b) green-yellow-black (c) green-black-black (d) yellow-black-black
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92000 Ω resistor? (a) white-red-red (b) white-red-orange (c) red-white-orange (d) white-red-yellow
  7. 7.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands brown, orange, orange. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands violet, white, brown. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does orange stand for?
  12. 12.🌈 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
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35000 Ω resistor? (a) orange-green-orange (b) orange-green-red (c) orange-green-yellow (d) green-orange-orange
  14. 14.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) brown-green-orange (b) green-brown-yellow (c) green-brown-orange (d) green-brown-red
  19. 19.🌈 In the resistor colour code, which number does brown stand for?
  20. 20.🌈 In the resistor colour code, which number does yellow stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) red-grey-black (b) grey-brown-black (c) brown-grey-black (d) brown-grey-brown
  22. 22.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands orange, orange, orange. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39000 Ω resistor? (a) orange-white-yellow (b) white-orange-orange (c) orange-white-red (d) orange-white-orange
  28. 28.🌈 In the resistor colour code, which number does blue stand for?
  29. 29.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 260 Ω resistor? (a) red-blue-brown (b) blue-red-brown (c) red-blue-red (d) red-blue-black
  33. 33.🌈 A resistor has the colour bands yellow, red, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does violet stand for?
  37. 37.🌈 A resistor has the colour bands brown, white, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) red-green-black (b) red-green-brown (c) green-red-black (d) orange-green-black
  40. 40.🌈 A resistor has the colour bands green, green, red. What is its value (in ohms)?

Answer key

  1. 9000
  2. 5 %
  3. 6400
  4. yellow-red-black
  5. yellow-black-black
  6. white-red-orange
  7. 26
  8. 37
  9. 13000
  10. 790
  11. 3
  12. the one nearest an end
  13. orange-green-orange
  14. 84
  15. 3000
  16. 5
  17. 69
  18. green-brown-orange
  19. 1
  20. 4
  21. brown-grey-black
  22. 72
  23. 5.8
  24. 8.2
  25. 8.5
  26. 33000
  27. orange-white-orange
  28. 6
  29. 25000
  30. 78
  31. 280
  32. red-blue-brown
  33. 420
  34. 1.2
  35. 690
  36. 7
  37. 19000
  38. 9.1
  39. red-green-black
  40. 5500

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