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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 674 · 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) 5 % (b) 25 % (c) 0 % (d) 50 %
  2. 2.🌈 A resistor has the colour bands violet, orange, orange. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does white stand for?
  4. 4.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does orange stand for?
  6. 6.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  11. 11.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  12. 12.🌈 In the resistor colour code, which number does brown stand for?
  13. 13.🌈 A resistor has the colour bands yellow, yellow, red. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9600 Ω resistor? (a) blue-white-red (b) white-blue-red (c) white-blue-orange (d) white-blue-brown
  15. 15.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does violet stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3800 Ω resistor? (a) grey-orange-red (b) orange-grey-red (c) orange-grey-brown (d) orange-grey-orange
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 840 Ω resistor? (a) grey-yellow-black (b) grey-yellow-red (c) grey-yellow-brown (d) yellow-grey-brown
  19. 19.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) red-orange-yellow (b) red-orange-orange (c) red-orange-red (d) orange-red-orange
  23. 23.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) green-blue-black (b) blue-green-brown (c) blue-green-black (d) violet-green-black
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56000 Ω resistor? (a) green-blue-yellow (b) green-blue-orange (c) green-blue-red (d) blue-green-orange
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 260 Ω resistor? (a) red-blue-black (b) red-blue-red (c) blue-red-brown (d) red-blue-brown
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33000 Ω resistor? (a) orange-orange-yellow (b) orange-yellow-orange (c) orange-orange-orange (d) orange-orange-red
  28. 28.🌈 In the resistor colour code, which number does green stand for?
  29. 29.🌈 A resistor has the colour bands violet, red, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands yellow, red, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54 Ω resistor? (a) green-yellow-brown (b) yellow-green-black (c) green-yellow-black (d) blue-yellow-black
  32. 32.🌈 In the resistor colour code, which number does red stand for?
  33. 33.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands orange, blue, orange. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-black (b) yellow-brown-black (c) orange-brown-brown (d) brown-orange-black
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-orange (b) red-green-red (c) red-green-brown (d) green-red-red
  37. 37.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?

Answer key

  1. 5 %
  2. 73000
  3. 9
  4. 1800
  5. 3
  6. 27
  7. 78
  8. 180
  9. 3300
  10. 100
  11. the one nearest an end
  12. 1
  13. 4400
  14. white-blue-red
  15. 540
  16. 7
  17. orange-grey-red
  18. grey-yellow-brown
  19. 620
  20. 1200
  21. 2.7
  22. red-orange-orange
  23. 49
  24. blue-green-black
  25. green-blue-orange
  26. red-blue-brown
  27. orange-orange-orange
  28. 5
  29. 7200
  30. 42
  31. green-yellow-black
  32. 2
  33. 78
  34. 36000
  35. orange-brown-black
  36. red-green-red
  37. 230
  38. 92
  39. 60000
  40. 51

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