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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 255 · 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 3800 Ω resistor? (a) orange-grey-brown (b) orange-grey-orange (c) orange-grey-red (d) grey-orange-red
  2. 2.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
  3. 3.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  4. 4.🌈 A resistor has the colour bands green, red, brown. What is its value (in ohms)?
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
  6. 6.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does red stand for?
  10. 10.🌈 In the resistor colour code, which number does green stand for?
  11. 11.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 940 Ω resistor? (a) yellow-white-brown (b) white-yellow-red (c) white-yellow-brown (d) white-yellow-black
  17. 17.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands red, violet, red. What is its value (in ohms)?
  19. 19.🌈 In the resistor colour code, which number does brown stand for?
  20. 20.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does white stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) brown-blue-black (b) brown-blue-brown (c) blue-brown-black (d) red-blue-black
  24. 24.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 150 Ω resistor? (a) brown-green-red (b) brown-green-black (c) brown-green-brown (d) green-brown-brown
  30. 30.🌈 In the resistor colour code, which number does orange stand for?
  31. 31.🌈 A resistor has the colour bands orange, red, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does blue stand for?
  34. 34.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does black stand for?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) brown-grey-black (b) white-grey-brown (c) grey-white-black (d) white-grey-black
  38. 38.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) blue-brown-black (b) violet-brown-black (c) blue-brown-brown (d) brown-blue-black
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) red-green-red (b) green-red-brown (c) red-green-black (d) red-green-brown

Answer key

  1. orange-grey-red
  2. 750
  3. the one nearest an end
  4. 520
  5. 5 %
  6. 1.1
  7. 140
  8. 33
  9. 2
  10. 5
  11. 67
  12. 360
  13. 81000
  14. 21
  15. 3.8
  16. white-yellow-brown
  17. 53000
  18. 2700
  19. 1
  20. 10
  21. 20000
  22. 9
  23. brown-blue-black
  24. 600
  25. 7500
  26. 1.5
  27. 9.2
  28. 30000
  29. brown-green-brown
  30. 3
  31. 32
  32. 41
  33. 6
  34. 670
  35. 2200
  36. 0
  37. white-grey-black
  38. 41
  39. blue-brown-black
  40. red-green-brown

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