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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 470 · 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 green, blue, black. What is its value (in ohms)?
  2. 2.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the widest gap (d) the one nearest an end
  3. 3.🌈 In the resistor colour code, which number does white stand for?
  4. 4.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 In the resistor colour code, which number does blue stand for?
  6. 6.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does violet stand for?
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  9. 9.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 150 Ω resistor? (a) brown-green-red (b) green-brown-brown (c) brown-green-black (d) brown-green-brown
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 960 Ω resistor? (a) white-blue-black (b) white-blue-red (c) blue-white-brown (d) white-blue-brown
  12. 12.🌈 In the resistor colour code, which number does red stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) red-red-black (b) brown-red-brown (c) brown-red-black (d) red-brown-black
  14. 14.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 97 Ω resistor? (a) white-violet-brown (b) brown-violet-black (c) white-violet-black (d) violet-white-black
  17. 17.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands blue, violet, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands green, blue, red. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does green stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22000 Ω resistor? (a) red-red-orange (b) red-red-yellow (c) red-orange-orange (d) red-red-red
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) brown-grey-black (b) brown-grey-red (c) brown-grey-brown (d) grey-brown-brown
  23. 23.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) brown-red-orange (b) brown-red-brown (c) red-brown-red (d) brown-red-red
  29. 29.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands white, red, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) red-violet-black (b) violet-red-brown (c) violet-red-black (d) grey-red-black
  35. 35.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) red-brown-red (b) red-brown-black (c) brown-red-brown (d) red-brown-brown
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) white-black-black (b) brown-black-black (c) brown-white-black (d) white-black-brown
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) brown-blue-yellow (b) brown-blue-red (c) brown-blue-orange (d) blue-brown-orange
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) brown-green-yellow (b) brown-green-red (c) brown-green-orange (d) green-brown-orange
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7500 Ω resistor? (a) violet-green-brown (b) green-violet-red (c) violet-green-orange (d) violet-green-red

Answer key

  1. 56
  2. the one nearest an end
  3. 9
  4. 8.2
  5. 6
  6. 410
  7. 7
  8. 5 %
  9. 290
  10. brown-green-brown
  11. white-blue-brown
  12. 2
  13. brown-red-black
  14. 81
  15. 1.3
  16. white-violet-black
  17. 4.8
  18. 6700
  19. 5600
  20. 5
  21. red-red-orange
  22. brown-grey-brown
  23. 400
  24. 12000
  25. 6.6
  26. 900
  27. 680
  28. brown-red-red
  29. 510
  30. 45000
  31. 9900
  32. 92
  33. 780
  34. violet-red-black
  35. 23
  36. red-brown-brown
  37. white-black-black
  38. brown-blue-orange
  39. brown-green-orange
  40. violet-green-red

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