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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 779 · 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 yellow, black, red. What is its value (in ohms)?
  2. 2.🌈 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
  3. 3.🌈 A resistor has the colour bands brown, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands white, green, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) red-brown-black (b) brown-red-brown (c) red-red-black (d) brown-red-black
  7. 7.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands yellow, orange, orange. What is its value (in ohms)?
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 5 % (d) 0 %
  10. 10.🌈 A resistor has the colour bands blue, white, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does red stand for?
  15. 15.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does black stand for?
  17. 17.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 In the resistor colour code, which number does brown stand for?
  19. 19.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does blue stand for?
  21. 21.🌈 A resistor has the colour bands blue, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does yellow stand for?
  23. 23.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40000 Ω resistor? (a) green-yellow-orange (b) yellow-black-red (c) yellow-black-orange (d) yellow-black-yellow
  26. 26.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91000 Ω resistor? (a) white-brown-red (b) brown-white-orange (c) white-brown-yellow (d) white-brown-orange
  29. 29.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-red-brown (b) red-red-black (c) orange-red-black (d) red-orange-black
  31. 31.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does grey stand for?
  33. 33.🌈 A resistor has the colour bands red, orange, red. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does orange stand for?
  35. 35.🌈 A resistor has the colour bands white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9100 Ω resistor? (a) white-brown-orange (b) brown-white-red (c) white-brown-brown (d) white-brown-red

Answer key

  1. 4000
  2. the one nearest an end
  3. 130
  4. 950
  5. 910
  6. brown-red-black
  7. 12
  8. 43000
  9. 5 %
  10. 69
  11. 970
  12. 5.9
  13. 4200
  14. 2
  15. 4.2
  16. 0
  17. 6.1
  18. 1
  19. 40000
  20. 6
  21. 640
  22. 4
  23. 250
  24. 60
  25. yellow-black-orange
  26. 3.7
  27. 7.1
  28. white-brown-orange
  29. 99
  30. red-red-black
  31. 8500
  32. 8
  33. 2300
  34. 3
  35. 970
  36. 8.1
  37. 24000
  38. 49
  39. 2.6
  40. white-brown-red

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