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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 763 · 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 white, blue, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3900 Ω resistor? (a) orange-white-red (b) orange-white-orange (c) orange-white-brown (d) white-orange-red
  7. 7.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  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.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
  11. 11.🌈 A resistor has the colour bands white, red, orange. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does white stand for?
  14. 14.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does blue stand for?
  17. 17.🌈 In the resistor colour code, which number does green stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) orange-brown-black (b) brown-red-black (c) red-brown-brown (d) red-brown-black
  19. 19.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands yellow, grey, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands violet, yellow, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, green, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) brown-grey-black (b) brown-grey-brown (c) grey-brown-brown (d) brown-grey-red
  26. 26.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24 Ω resistor? (a) red-yellow-brown (b) orange-yellow-black (c) yellow-red-black (d) red-yellow-black
  29. 29.🌈 A resistor has the colour bands blue, white, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands blue, green, black. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does grey stand for?
  32. 32.🌈 A resistor has the colour bands orange, orange, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands violet, green, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 310 Ω resistor? (a) brown-orange-brown (b) orange-brown-brown (c) orange-brown-black (d) orange-brown-red
  36. 36.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 96
  2. 40
  3. 5000
  4. 8.7
  5. 900
  6. orange-white-red
  7. 50
  8. 88
  9. 5 %
  10. the one nearest an end
  11. 92000
  12. 190
  13. 9
  14. 510
  15. 2
  16. 6
  17. 5
  18. red-brown-black
  19. 890
  20. 8.3
  21. 48
  22. 7400
  23. 1800
  24. 150
  25. brown-grey-brown
  26. 490
  27. 400
  28. red-yellow-black
  29. 69
  30. 65
  31. 8
  32. 33000
  33. 75
  34. 970
  35. orange-brown-brown
  36. 7800
  37. 70
  38. 10
  39. 230
  40. 7.2

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