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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 978 · 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, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11 Ω resistor? (a) brown-red-black (b) brown-brown-black (c) brown-brown-brown (d) red-brown-black
  5. 5.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  7. 7.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) the one nearest an end (d) any band
  8. 8.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does orange stand for?
  10. 10.🌈 In the resistor colour code, which number does black stand for?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64 Ω resistor? (a) yellow-blue-black (b) blue-yellow-brown (c) violet-yellow-black (d) blue-yellow-black
  12. 12.🌈 In the resistor colour code, which number does red stand for?
  13. 13.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does brown stand for?
  15. 15.🌈 A resistor has the colour bands brown, white, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands white, orange, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands grey, blue, orange. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does white stand for?
  22. 22.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) orange-red-brown (b) red-black-red (c) red-black-black (d) red-black-brown
  24. 24.🌈 In the resistor colour code, which number does violet stand for?
  25. 25.🌈 A resistor has the colour bands orange, blue, orange. What is its value (in ohms)?
  26. 26.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  27. 27.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 63 Ω resistor? (a) orange-blue-black (b) blue-orange-brown (c) blue-orange-black (d) violet-orange-black
  31. 31.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) white-yellow-black (b) yellow-grey-black (c) grey-yellow-brown (d) grey-yellow-black
  34. 34.🌈 A resistor has the colour bands white, black, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) brown-blue-yellow (b) brown-blue-red (c) blue-brown-orange (d) brown-blue-orange
  36. 36.🌈 In the resistor colour code, which number does yellow stand for?
  37. 37.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 40
  2. 69
  3. 47
  4. brown-brown-black
  5. 81
  6. 300
  7. the one nearest an end
  8. 16000
  9. 3
  10. 0
  11. blue-yellow-black
  12. 2
  13. 85
  14. 1
  15. 1900
  16. 39
  17. 40000
  18. 93
  19. 86000
  20. 17000
  21. 9
  22. 7800
  23. red-black-brown
  24. 7
  25. 36000
  26. 5 %
  27. 590
  28. 15000
  29. 490
  30. blue-orange-black
  31. 15
  32. 25
  33. grey-yellow-black
  34. 900
  35. brown-blue-orange
  36. 4
  37. 26
  38. 71000
  39. 510
  40. 66

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