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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 435 · 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 red, violet, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  5. 5.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) the one nearest an end (d) any band
  6. 6.🌈 In the resistor colour code, which number does orange stand for?
  7. 7.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57000 Ω resistor? (a) green-violet-yellow (b) violet-green-orange (c) green-violet-red (d) green-violet-orange
  9. 9.🌈 A resistor has the colour bands red, violet, brown. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 100 Ω resistor? (a) red-brown-brown (b) brown-black-black (c) brown-black-red (d) brown-black-brown
  11. 11.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) red-blue-orange (b) blue-red-yellow (c) blue-red-red (d) blue-red-orange
  14. 14.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-brown (b) red-violet-red (c) violet-red-brown (d) red-violet-black
  19. 19.🌈 In the resistor colour code, which number does grey stand for?
  20. 20.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands yellow, red, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does green stand for?
  23. 23.🌈 A resistor has the colour bands yellow, grey, black. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does red stand for?
  25. 25.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 730 Ω resistor? (a) violet-orange-red (b) orange-violet-brown (c) violet-orange-black (d) violet-orange-brown
  31. 31.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands blue, green, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands brown, green, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  37. 37.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  38. 38.🌈 In the resistor colour code, which number does black stand for?
  39. 39.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 2.7
  2. 78
  3. 63000
  4. 11000
  5. the one nearest an end
  6. 3
  7. 890
  8. green-violet-orange
  9. 270
  10. brown-black-brown
  11. 710
  12. 390
  13. blue-red-orange
  14. 8000
  15. 300
  16. 56
  17. 9.2
  18. red-violet-brown
  19. 8
  20. 6.6
  21. 420
  22. 5
  23. 48
  24. 2
  25. 810
  26. 23000
  27. 170
  28. 7.2
  29. 2.5
  30. violet-orange-brown
  31. 6.7
  32. 65
  33. 8.6
  34. 28
  35. 150
  36. 51
  37. 5 %
  38. 0
  39. 12000
  40. 22

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