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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 909 · 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 brown, grey, orange. What is its value (in ohms)?
  2. 2.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) the widest gap (d) any band
  3. 3.🌈 A resistor has the colour bands yellow, red, orange. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86000 Ω resistor? (a) grey-blue-yellow (b) grey-blue-red (c) blue-grey-orange (d) grey-blue-orange
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) orange-yellow-brown (b) yellow-yellow-black (c) yellow-orange-black (d) orange-yellow-black
  6. 6.🌈 In the resistor colour code, which number does brown stand for?
  7. 7.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  8. 8.🌈 In the resistor colour code, which number does violet stand for?
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  10. 10.🌈 In the resistor colour code, which number does orange stand for?
  11. 11.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does black stand for?
  13. 13.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does grey stand for?
  15. 15.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) violet-brown-black (b) brown-blue-black (c) blue-brown-brown (d) blue-brown-black
  19. 19.🌈 A resistor has the colour bands green, green, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) violet-yellow-black (b) yellow-violet-brown (c) green-violet-black (d) yellow-violet-black
  23. 23.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does green stand for?
  25. 25.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands yellow, white, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands red, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95000 Ω resistor? (a) white-green-yellow (b) white-green-red (c) green-white-orange (d) white-green-orange
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9000 Ω resistor? (a) brown-white-red (b) white-black-brown (c) white-black-orange (d) white-black-red
  36. 36.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does blue stand for?
  39. 39.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) grey-green-red (b) grey-green-orange (c) green-grey-orange (d) grey-green-yellow

Answer key

  1. 18000
  2. the one nearest an end
  3. 42000
  4. grey-blue-orange
  5. orange-yellow-black
  6. 1
  7. 720
  8. 7
  9. 5 %
  10. 3
  11. 360
  12. 0
  13. 200
  14. 8
  15. 670
  16. 250
  17. 52000
  18. blue-brown-black
  19. 55
  20. 4200
  21. 11
  22. yellow-violet-black
  23. 790
  24. 5
  25. 910
  26. 240
  27. 2.2
  28. 49
  29. 4
  30. 87000
  31. 21000
  32. 260
  33. 20
  34. white-green-orange
  35. white-black-red
  36. 79
  37. 800
  38. 6
  39. 830
  40. grey-green-orange

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