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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 701 · 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) 50 % (d) 5 %
  2. 2.🌈 In the resistor colour code, which number does grey stand for?
  3. 3.🌈 In the resistor colour code, which number does orange stand for?
  4. 4.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
  5. 5.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  6. 6.🌈 A resistor has the colour bands brown, white, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-yellow (b) red-black-orange (c) orange-red-orange (d) red-black-red
  9. 9.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands yellow, white, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands orange, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9100 Ω resistor? (a) brown-white-red (b) white-brown-red (c) white-brown-brown (d) white-brown-orange
  21. 21.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands blue, yellow, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 540 Ω resistor? (a) yellow-green-brown (b) green-yellow-brown (c) green-yellow-red (d) green-yellow-black
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) yellow-orange-red (b) orange-yellow-brown (c) orange-yellow-red (d) orange-yellow-orange
  26. 26.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands blue, red, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) violet-red-red (b) violet-red-orange (c) red-violet-red (d) violet-red-brown
  30. 30.🌈 A resistor has the colour bands red, orange, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands orange, yellow, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands white, yellow, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) red-yellow-black (b) green-red-black (c) yellow-red-black (d) yellow-red-brown
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) red-red-black (b) brown-red-brown (c) red-brown-black (d) brown-red-black
  36. 36.🌈 A resistor has the colour bands red, white, orange. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 550 Ω resistor? (a) green-green-brown (b) green-blue-brown (c) green-green-black (d) green-green-red
  38. 38.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 In the resistor colour code, which number does blue stand for?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) blue-brown-orange (b) brown-blue-orange (c) brown-blue-yellow (d) brown-blue-red

Answer key

  1. 5 %
  2. 8
  3. 3
  4. 3600
  5. the one nearest an end
  6. 19
  7. 320
  8. red-black-orange
  9. 14
  10. 25
  11. 10
  12. 49000
  13. 25000
  14. 600
  15. 74
  16. 370
  17. 1.1
  18. 52000
  19. 3000
  20. white-brown-red
  21. 410
  22. 910
  23. 6.4
  24. green-yellow-brown
  25. orange-yellow-red
  26. 220
  27. 91
  28. 62
  29. violet-red-red
  30. 2300
  31. 34
  32. 9.4
  33. 36
  34. yellow-red-black
  35. brown-red-black
  36. 29000
  37. green-green-brown
  38. 6.8
  39. 6
  40. brown-blue-orange

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