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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 657 · 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 violet stand for?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88 Ω resistor? (a) grey-grey-black (b) grey-white-black (c) white-grey-black (d) grey-grey-brown
  3. 3.🌈 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
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  5. 5.🌈 A resistor has the colour bands orange, green, black. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does red stand for?
  7. 7.🌈 A resistor has the colour bands yellow, blue, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 In the resistor colour code, which number does white stand for?
  9. 9.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands white, black, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4000 Ω resistor? (a) yellow-black-orange (b) yellow-black-red (c) yellow-black-brown (d) green-yellow-red
  13. 13.🌈 A resistor has the colour bands yellow, green, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands violet, violet, orange. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands green, white, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34000 Ω resistor? (a) yellow-orange-orange (b) orange-yellow-red (c) orange-yellow-yellow (d) orange-yellow-orange
  19. 19.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands white, orange, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does black stand for?
  23. 23.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) violet-grey-black (b) grey-violet-brown (c) grey-violet-black (d) white-violet-black
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) grey-red-red (b) red-grey-orange (c) red-grey-red (d) red-grey-brown
  26. 26.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands yellow, grey, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands blue, violet, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does green stand for?
  35. 35.🌈 A resistor has the colour bands green, grey, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands grey, violet, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 In the resistor colour code, which number does grey stand for?
  40. 40.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 7
  2. grey-grey-black
  3. the one nearest an end
  4. 5 %
  5. 35
  6. 2
  7. 46
  8. 9
  9. 100
  10. 900
  11. 13
  12. yellow-black-red
  13. 45
  14. 77000
  15. 5900
  16. 26
  17. 3.1
  18. orange-yellow-orange
  19. 3.7
  20. 93
  21. 2600
  22. 0
  23. 8.3
  24. grey-violet-black
  25. red-grey-red
  26. 92
  27. 48
  28. 50000
  29. 60000
  30. 63
  31. 1.1
  32. 6700
  33. 35000
  34. 5
  35. 580
  36. 20
  37. 82000
  38. 87
  39. 8
  40. 1.6

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