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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 718 · 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 grey stand for?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 25 % (d) 50 %
  3. 3.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2900 Ω resistor? (a) red-white-red (b) red-white-orange (c) white-red-red (d) red-white-brown
  5. 5.🌈 In the resistor colour code, which number does black stand for?
  6. 6.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the gold band (d) the widest gap
  9. 9.🌈 In the resistor colour code, which number does brown stand for?
  10. 10.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does red stand for?
  12. 12.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) grey-brown-black (b) brown-grey-brown (c) red-grey-black (d) brown-grey-black
  17. 17.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 520 Ω resistor? (a) green-red-red (b) red-green-brown (c) green-red-brown (d) green-red-black
  19. 19.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands grey, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 240 Ω resistor? (a) red-yellow-red (b) yellow-red-brown (c) red-yellow-black (d) red-yellow-brown
  25. 25.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-brown (b) red-red-red (c) red-orange-red (d) red-red-orange
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5000 Ω resistor? (a) green-black-brown (b) blue-green-red (c) green-black-red (d) green-black-orange
  28. 28.🌈 A resistor has the colour bands orange, black, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 In the resistor colour code, which number does green stand for?
  30. 30.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 150 Ω resistor? (a) brown-green-black (b) green-brown-brown (c) brown-green-brown (d) brown-green-red
  33. 33.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands blue, green, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7700 Ω resistor? (a) violet-violet-red (b) violet-grey-red (c) violet-violet-brown (d) violet-violet-orange
  39. 39.🌈 A resistor has the colour bands yellow, grey, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?

Answer key

  1. 8
  2. 5 %
  3. 500
  4. red-white-red
  5. 0
  6. 5.4
  7. 18
  8. the one nearest an end
  9. 1
  10. 150
  11. 2
  12. 8100
  13. 53
  14. 640
  15. 2.5
  16. brown-grey-black
  17. 7800
  18. green-red-brown
  19. 7100
  20. 880
  21. 31000
  22. 4.8
  23. 18
  24. red-yellow-brown
  25. 62
  26. red-red-red
  27. green-black-red
  28. 30
  29. 5
  30. 53
  31. 11
  32. brown-green-brown
  33. 31
  34. 65
  35. 390
  36. 230
  37. 21000
  38. violet-violet-red
  39. 48
  40. 670

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