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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 767 · 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 orange, brown, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands violet, orange, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands yellow, white, red. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
  7. 7.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  8. 8.🌈 In the resistor colour code, which number does yellow stand for?
  9. 9.🌈 In the resistor colour code, which number does green stand for?
  10. 10.🌈 In the resistor colour code, which number does red stand for?
  11. 11.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88 Ω resistor? (a) grey-grey-brown (b) grey-grey-black (c) white-grey-black (d) grey-white-black
  13. 13.🌈 In the resistor colour code, which number does blue stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) brown-green-orange (b) green-brown-orange (c) brown-green-red (d) brown-green-yellow
  15. 15.🌈 In the resistor colour code, which number does black stand for?
  16. 16.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands yellow, blue, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) brown-black-brown (b) red-brown-red (c) brown-black-red (d) brown-black-orange
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 370 Ω resistor? (a) violet-orange-brown (b) orange-violet-black (c) orange-violet-red (d) orange-violet-brown
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) green-red-black (b) red-green-black (c) blue-red-black (d) green-red-brown
  23. 23.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does grey stand for?
  28. 28.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83000 Ω resistor? (a) grey-orange-orange (b) orange-grey-orange (c) grey-orange-yellow (d) grey-orange-red
  30. 30.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) brown-black-orange (b) brown-black-yellow (c) brown-black-red (d) red-brown-orange
  32. 32.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does white stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55 Ω resistor? (a) blue-green-black (b) green-blue-black (c) green-green-brown (d) green-green-black
  35. 35.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66000 Ω resistor? (a) blue-blue-orange (b) blue-blue-yellow (c) blue-violet-orange (d) blue-blue-red
  38. 38.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands blue, red, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 31
  2. 73
  3. 4900
  4. 3.7
  5. 83000
  6. 5 %
  7. the one nearest an end
  8. 4
  9. 5
  10. 2
  11. 22000
  12. grey-grey-black
  13. 6
  14. brown-green-orange
  15. 0
  16. 40000
  17. 310
  18. 46000
  19. 3.5
  20. brown-black-red
  21. orange-violet-brown
  22. green-red-black
  23. 23
  24. 7100
  25. 56000
  26. 4.8
  27. 8
  28. 9.8
  29. grey-orange-orange
  30. 17000
  31. brown-black-orange
  32. 5800
  33. 9
  34. green-green-black
  35. 3100
  36. 140
  37. blue-blue-orange
  38. 170
  39. 6.2
  40. 13

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