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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 461 · 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.🌈 In the resistor colour code, which number does red stand for?
  2. 2.🌈 A resistor has the colour bands brown, green, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3500 Ω resistor? (a) green-orange-red (b) orange-green-red (c) orange-green-brown (d) orange-green-orange
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29 Ω resistor? (a) red-white-brown (b) orange-white-black (c) white-red-black (d) red-white-black
  7. 7.🌈 In the resistor colour code, which number does white stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6100 Ω resistor? (a) blue-brown-orange (b) blue-brown-red (c) brown-blue-red (d) blue-brown-brown
  9. 9.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does black stand for?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8000 Ω resistor? (a) white-grey-red (b) grey-black-orange (c) grey-black-red (d) grey-black-brown
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) green-black-black (b) yellow-black-brown (c) yellow-black-black (d) green-yellow-black
  13. 13.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?
  14. 14.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  15. 15.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does grey stand for?
  17. 17.🌈 A resistor has the colour bands green, white, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) grey-red-black (b) violet-red-brown (c) violet-red-black (d) red-violet-black
  24. 24.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) orange-brown-orange (b) orange-brown-brown (c) brown-orange-red (d) orange-brown-red
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) red-green-red (b) red-green-orange (c) green-red-orange (d) red-green-yellow
  27. 27.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8100 Ω resistor? (a) grey-brown-brown (b) grey-brown-orange (c) grey-brown-red (d) brown-grey-red
  30. 30.🌈 In the resistor colour code, which number does violet stand for?
  31. 31.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands grey, brown, brown. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does brown stand for?
  36. 36.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 In the resistor colour code, which number does yellow stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) violet-blue-black (b) violet-blue-brown (c) blue-violet-brown (d) violet-blue-red
  39. 39.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 2
  2. 150
  3. 63
  4. orange-green-red
  5. 5 %
  6. red-white-black
  7. 9
  8. blue-brown-red
  9. 41
  10. 0
  11. grey-black-red
  12. yellow-black-black
  13. 23000
  14. the one nearest an end
  15. 23
  16. 8
  17. 59
  18. 37
  19. 570
  20. 40000
  21. 250
  22. 11000
  23. violet-red-black
  24. 2.1
  25. orange-brown-red
  26. red-green-orange
  27. 130
  28. 730
  29. grey-brown-red
  30. 7
  31. 94
  32. 4200
  33. 27
  34. 810
  35. 1
  36. 82
  37. 4
  38. violet-blue-brown
  39. 10
  40. 340

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