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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 18 · 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 brown, brown, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 In the resistor colour code, which number does yellow stand for?
  4. 4.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 410 Ω resistor? (a) yellow-brown-red (b) brown-yellow-brown (c) yellow-brown-black (d) yellow-brown-brown
  7. 7.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) grey-green-red (b) grey-green-yellow (c) grey-green-orange (d) green-grey-orange
  14. 14.🌈 In the resistor colour code, which number does blue stand for?
  15. 15.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  16. 16.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does white stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 640 Ω resistor? (a) blue-yellow-brown (b) yellow-blue-brown (c) blue-yellow-red (d) blue-yellow-black
  19. 19.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) red-green-black (b) green-red-brown (c) green-red-black (d) blue-red-black
  23. 23.🌈 In the resistor colour code, which number does grey stand for?
  24. 24.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9300 Ω resistor? (a) white-orange-orange (b) white-orange-red (c) white-orange-brown (d) orange-white-red
  26. 26.🌈 In the resistor colour code, which number does red stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 300 Ω resistor? (a) yellow-orange-brown (b) orange-black-black (c) orange-black-brown (d) orange-black-red
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13 Ω resistor? (a) orange-brown-black (b) red-orange-black (c) brown-orange-brown (d) brown-orange-black
  29. 29.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7000 Ω resistor? (a) violet-black-brown (b) violet-black-red (c) violet-black-orange (d) grey-violet-red
  32. 32.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands green, red, red. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-brown-brown (b) brown-red-red (c) brown-brown-red (d) brown-brown-orange
  35. 35.🌈 In the resistor colour code, which number does violet stand for?
  36. 36.🌈 A resistor has the colour bands green, white, red. What is its value (in ohms)?
  37. 37.🌈 In the resistor colour code, which number does orange stand for?
  38. 38.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands violet, white, brown. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3900 Ω resistor? (a) orange-white-brown (b) orange-white-red (c) white-orange-red (d) orange-white-orange

Answer key

  1. 11000
  2. 580
  3. 4
  4. 22
  5. 3200
  6. yellow-brown-brown
  7. 3.9
  8. 5000
  9. 220
  10. 2.5
  11. 9.7
  12. 31
  13. grey-green-orange
  14. 6
  15. 5 %
  16. 370
  17. 9
  18. blue-yellow-brown
  19. 64
  20. 8.3
  21. the one nearest an end
  22. green-red-black
  23. 8
  24. 4.6
  25. white-orange-red
  26. 2
  27. orange-black-brown
  28. brown-orange-black
  29. 5.5
  30. 3700
  31. violet-black-red
  32. 250
  33. 5200
  34. brown-brown-red
  35. 7
  36. 5900
  37. 3
  38. 420
  39. 790
  40. orange-white-red

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