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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 671 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15 Ω resistor? (a) red-green-black (b) brown-green-brown (c) green-brown-black (d) brown-green-black
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) orange-violet-brown (b) violet-orange-black (c) orange-violet-black (d) yellow-violet-black
  3. 3.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  4. 4.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  5. 5.🌈 In the resistor colour code, which number does blue stand for?
  6. 6.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does orange stand for?
  10. 10.🌈 In the resistor colour code, which number does yellow stand for?
  11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  12. 12.🌈 A resistor has the colour bands yellow, white, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  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 blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands violet, grey, orange. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4500 Ω resistor? (a) yellow-green-red (b) yellow-green-orange (c) yellow-green-brown (d) green-yellow-red
  20. 20.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) violet-black-black (b) grey-black-black (c) grey-violet-black (d) violet-black-brown
  22. 22.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7500 Ω resistor? (a) green-violet-red (b) violet-green-orange (c) violet-green-brown (d) violet-green-red
  24. 24.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does grey stand for?
  26. 26.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does black stand for?
  28. 28.🌈 In the resistor colour code, which number does red stand for?
  29. 29.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands white, brown, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands grey, orange, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands green, blue, brown. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) red-black-black (b) red-brown-black (c) brown-black-brown (d) brown-black-black
  36. 36.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 890 Ω resistor? (a) white-grey-brown (b) grey-white-black (c) grey-white-brown (d) grey-white-red
  38. 38.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. brown-green-black
  2. orange-violet-black
  3. 68
  4. the one nearest an end
  5. 6
  6. 9.8
  7. 2900
  8. 80
  9. 3
  10. 4
  11. 5 %
  12. 49000
  13. 10000
  14. 6.1
  15. 300
  16. 670
  17. 78000
  18. 63
  19. yellow-green-red
  20. 11000
  21. violet-black-black
  22. 14
  23. violet-green-red
  24. 53
  25. 8
  26. 3600
  27. 0
  28. 2
  29. 210
  30. 91
  31. 8300
  32. 81
  33. 560
  34. 32
  35. brown-black-black
  36. 900
  37. grey-white-brown
  38. 10
  39. 66
  40. 16

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