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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 792 · 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 grey, white, orange. What is its value (in ohms)?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  3. 3.🌈 In the resistor colour code, which number does red stand for?
  4. 4.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4500 Ω resistor? (a) green-yellow-red (b) yellow-green-orange (c) yellow-green-brown (d) yellow-green-red
  6. 6.🌈 A resistor has the colour bands blue, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
  8. 8.🌈 In the resistor colour code, which number does white stand for?
  9. 9.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands white, blue, brown. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does green stand for?
  12. 12.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 540 Ω resistor? (a) yellow-green-brown (b) green-yellow-red (c) green-yellow-brown (d) green-yellow-black
  17. 17.🌈 In the resistor colour code, which number does violet stand for?
  18. 18.🌈 A resistor has the colour bands yellow, grey, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55000 Ω resistor? (a) green-blue-orange (b) green-green-orange (c) green-green-yellow (d) green-green-red
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 970 Ω resistor? (a) white-violet-brown (b) white-violet-red (c) violet-white-brown (d) white-violet-black
  23. 23.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands grey, green, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91 Ω resistor? (a) brown-white-black (b) brown-brown-black (c) white-brown-black (d) white-brown-brown
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14000 Ω resistor? (a) brown-yellow-red (b) brown-yellow-yellow (c) brown-yellow-orange (d) yellow-brown-orange
  28. 28.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 490 Ω resistor? (a) white-yellow-brown (b) yellow-white-brown (c) yellow-white-red (d) yellow-white-black
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53000 Ω resistor? (a) orange-green-orange (b) green-orange-yellow (c) green-orange-red (d) green-orange-orange
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6500 Ω resistor? (a) blue-green-red (b) blue-green-brown (c) green-blue-red (d) blue-green-orange
  32. 32.🌈 In the resistor colour code, which number does brown stand for?
  33. 33.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 830 Ω resistor? (a) grey-orange-red (b) orange-grey-brown (c) grey-orange-brown (d) grey-orange-black
  37. 37.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 In the resistor colour code, which number does orange stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11 Ω resistor? (a) brown-red-black (b) red-brown-black (c) brown-brown-brown (d) brown-brown-black
  40. 40.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?

Answer key

  1. 89000
  2. 5 %
  3. 2
  4. 680
  5. yellow-green-red
  6. 630
  7. the one nearest an end
  8. 9
  9. 89
  10. 960
  11. 5
  12. 8.3
  13. 14000
  14. 500
  15. 14
  16. green-yellow-brown
  17. 7
  18. 48
  19. 50
  20. 25
  21. green-green-orange
  22. white-violet-brown
  23. 1000
  24. 97
  25. 85
  26. white-brown-black
  27. brown-yellow-orange
  28. 400
  29. yellow-white-brown
  30. green-orange-orange
  31. blue-green-red
  32. 1
  33. 23
  34. 660
  35. 82
  36. grey-orange-brown
  37. 8.7
  38. 3
  39. brown-brown-black
  40. 3300

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