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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 495 · 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 brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92 Ω resistor? (a) white-red-black (b) brown-red-black (c) red-white-black (d) white-red-brown
  3. 3.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  4. 4.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
  5. 5.🌈 In the resistor colour code, which number does red stand for?
  6. 6.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8600 Ω resistor? (a) blue-grey-red (b) grey-blue-brown (c) grey-blue-red (d) grey-blue-orange
  8. 8.🌈 In the resistor colour code, which number does blue stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53000 Ω resistor? (a) orange-green-orange (b) green-orange-yellow (c) green-orange-red (d) green-orange-orange
  10. 10.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does brown stand for?
  14. 14.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) grey-orange-black (b) orange-violet-black (c) violet-orange-brown (d) violet-orange-black
  20. 20.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does orange stand for?
  23. 23.🌈 A resistor has the colour bands violet, violet, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands green, grey, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) brown-green-black (b) green-brown-brown (c) blue-brown-black (d) green-brown-black
  30. 30.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does green stand for?
  32. 32.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands grey, white, red. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does violet stand for?
  35. 35.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-brown-red (b) brown-brown-brown (c) brown-brown-black (d) brown-red-brown
  37. 37.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) grey-brown-brown (b) brown-grey-black (c) white-brown-black (d) grey-brown-black
  39. 39.🌈 A resistor has the colour bands blue, grey, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 11
  2. white-red-black
  3. 26
  4. the one nearest an end
  5. 2
  6. 220
  7. grey-blue-red
  8. 6
  9. green-orange-orange
  10. 81
  11. 62
  12. 72000
  13. 1
  14. 80
  15. 9100
  16. 250
  17. 32
  18. 220
  19. violet-orange-black
  20. 53
  21. 3.8
  22. 3
  23. 77000
  24. 24000
  25. 980
  26. 580
  27. 820
  28. 5 %
  29. green-brown-black
  30. 5
  31. 5
  32. 52
  33. 8900
  34. 7
  35. 9.9
  36. brown-brown-brown
  37. 21
  38. grey-brown-black
  39. 68
  40. 99

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