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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 74 · 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 violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  4. 4.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 In the resistor colour code, which number does black stand for?
  6. 6.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  8. 8.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  9. 9.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 360 Ω resistor? (a) orange-blue-black (b) blue-orange-brown (c) orange-blue-red (d) orange-blue-brown
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) red-blue-brown (b) blue-red-red (c) blue-red-black (d) blue-red-brown
  12. 12.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does orange stand for?
  15. 15.🌈 A resistor has the colour bands white, orange, brown. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) red-white-black (b) white-brown-black (c) brown-white-brown (d) brown-white-black
  17. 17.🌈 A resistor has the colour bands grey, blue, orange. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 560 Ω resistor? (a) green-blue-black (b) green-blue-brown (c) blue-green-brown (d) green-blue-red
  19. 19.🌈 In the resistor colour code, which number does red stand for?
  20. 20.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands white, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) green-black-red (b) blue-green-orange (c) green-black-yellow (d) green-black-orange
  25. 25.🌈 A resistor has the colour bands yellow, brown, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands yellow, white, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  28. 28.🌈 In the resistor colour code, which number does blue stand for?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 150 Ω resistor? (a) brown-green-brown (b) brown-green-black (c) brown-green-red (d) green-brown-brown
  30. 30.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands red, orange, red. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) grey-green-black (b) green-grey-brown (c) green-grey-black (d) blue-grey-black
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7000 Ω resistor? (a) violet-black-red (b) violet-black-brown (c) violet-black-orange (d) grey-violet-red
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) brown-white-black (b) white-white-brown (c) white-white-black (d) white-black-black
  35. 35.🌈 A resistor has the colour bands yellow, black, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29000 Ω resistor? (a) red-white-yellow (b) white-red-orange (c) red-white-red (d) red-white-orange
  37. 37.🌈 In the resistor colour code, which number does green stand for?
  38. 38.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 70
  2. 64
  3. 5 %
  4. 9.5
  5. 0
  6. 88
  7. 110
  8. the one nearest an end
  9. 50000
  10. orange-blue-brown
  11. blue-red-brown
  12. 83
  13. 98000
  14. 3
  15. 930
  16. brown-white-black
  17. 86000
  18. green-blue-brown
  19. 2
  20. 2.2
  21. 980
  22. 360
  23. 82000
  24. green-black-orange
  25. 4100
  26. 4900
  27. 19
  28. 6
  29. brown-green-brown
  30. 8.9
  31. 2300
  32. green-grey-black
  33. violet-black-red
  34. white-white-black
  35. 40
  36. red-white-orange
  37. 5
  38. 370
  39. 18
  40. 4.1

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