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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 372 · 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 gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  2. 2.🌈 In the resistor colour code, which number does red stand for?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) red-black-black (b) brown-black-black (c) brown-black-brown (d) red-brown-black
  4. 4.🌈 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
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7000 Ω resistor? (a) violet-black-brown (b) grey-violet-red (c) violet-black-orange (d) violet-black-red
  6. 6.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does blue stand for?
  8. 8.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands red, white, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-black (b) brown-white-brown (c) white-black-red (d) white-black-brown
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 100 Ω resistor? (a) red-brown-brown (b) brown-black-red (c) brown-black-black (d) brown-black-brown
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) grey-brown-red (b) brown-grey-brown (c) brown-grey-red (d) brown-grey-orange
  13. 13.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 550 Ω resistor? (a) green-blue-brown (b) green-green-red (c) green-green-brown (d) green-green-black
  16. 16.🌈 A resistor has the colour bands yellow, white, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  18. 18.🌈 In the resistor colour code, which number does brown stand for?
  19. 19.🌈 In the resistor colour code, which number does violet stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 530 Ω resistor? (a) green-orange-red (b) green-orange-brown (c) green-orange-black (d) orange-green-brown
  21. 21.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) yellow-black-black (b) green-yellow-black (c) yellow-black-brown (d) green-black-black
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-black (b) grey-red-brown (c) red-grey-brown (d) red-grey-red
  25. 25.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5500 Ω resistor? (a) green-blue-red (b) green-green-red (c) green-green-brown (d) green-green-orange
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69000 Ω resistor? (a) blue-white-red (b) blue-white-orange (c) blue-white-yellow (d) white-blue-orange
  28. 28.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands yellow, blue, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does green stand for?
  35. 35.🌈 A resistor has the colour bands white, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99000 Ω resistor? (a) white-white-orange (b) white-black-orange (c) white-white-yellow (d) white-white-red
  39. 39.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?

Answer key

  1. 5 %
  2. 2
  3. brown-black-black
  4. the one nearest an end
  5. violet-black-red
  6. 3.4
  7. 6
  8. 170
  9. 2.9
  10. white-black-brown
  11. brown-black-brown
  12. brown-grey-red
  13. 6.9
  14. 52
  15. green-green-brown
  16. 4.9
  17. 77
  18. 1
  19. 7
  20. green-orange-brown
  21. 200
  22. 50
  23. yellow-black-black
  24. red-grey-brown
  25. 6
  26. green-green-red
  27. blue-white-orange
  28. 700
  29. 46000
  30. 38000
  31. 22
  32. 620
  33. 28000
  34. 5
  35. 94
  36. 1.2
  37. 290
  38. white-white-orange
  39. 740
  40. 150

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