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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 775 · 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 green, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91 Ω resistor? (a) white-brown-brown (b) brown-brown-black (c) white-brown-black (d) brown-white-black
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  4. 4.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
  10. 10.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands white, orange, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5800 Ω resistor? (a) green-grey-orange (b) grey-green-red (c) green-grey-red (d) green-grey-brown
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24 Ω resistor? (a) red-yellow-black (b) red-yellow-brown (c) yellow-red-black (d) orange-yellow-black
  15. 15.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does orange stand for?
  17. 17.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands grey, white, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) red-violet-black (b) violet-red-black (c) grey-red-black (d) violet-red-brown
  25. 25.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands green, yellow, brown. What is its value (in ohms)?
  28. 28.🌈 In the resistor colour code, which number does green stand for?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 450 Ω resistor? (a) yellow-green-black (b) green-yellow-brown (c) yellow-green-red (d) yellow-green-brown
  30. 30.🌈 A resistor has the colour bands orange, blue, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands violet, red, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, violet, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-black-black (b) violet-black-black (c) grey-violet-black (d) violet-black-brown
  37. 37.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7900 Ω resistor? (a) violet-white-red (b) white-violet-red (c) violet-white-brown (d) violet-white-orange
  39. 39.🌈 A resistor has the colour bands blue, blue, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53 Ω resistor? (a) orange-green-black (b) green-orange-black (c) blue-orange-black (d) green-orange-brown

Answer key

  1. 560
  2. white-brown-black
  3. 5 %
  4. 250
  5. 430
  6. 56
  7. 24000
  8. 510
  9. the one nearest an end
  10. 5.4
  11. 780
  12. 93
  13. green-grey-red
  14. red-yellow-black
  15. 220
  16. 3
  17. 21
  18. 690
  19. 710
  20. 17
  21. 20
  22. 89
  23. 20
  24. violet-red-black
  25. 9.2
  26. 11000
  27. 540
  28. 5
  29. yellow-green-brown
  30. 36000
  31. 64
  32. 3200
  33. 7200
  34. 87
  35. 23
  36. violet-black-black
  37. 9
  38. violet-white-red
  39. 66000
  40. green-orange-black

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