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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 567 · 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.🌈 In the resistor colour code, which number does red stand for?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) brown-red-brown (b) red-brown-red (c) red-brown-brown (d) red-brown-black
  3. 3.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands grey, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  6. 6.🌈 In the resistor colour code, which number does white stand for?
  7. 7.🌈 In the resistor colour code, which number does yellow stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70000 Ω resistor? (a) grey-violet-orange (b) violet-black-red (c) violet-black-yellow (d) violet-black-orange
  9. 9.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands grey, blue, brown. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2600 Ω resistor? (a) red-blue-orange (b) blue-red-red (c) red-blue-red (d) red-blue-brown
  13. 13.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does blue stand for?
  15. 15.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) red-grey-brown (b) grey-red-black (c) orange-grey-black (d) red-grey-black
  18. 18.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  19. 19.🌈 In the resistor colour code, which number does orange stand for?
  20. 20.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) red-violet-red (b) violet-red-brown (c) violet-red-orange (d) violet-red-red
  22. 22.🌈 A resistor has the colour bands violet, brown, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-red (b) white-black-black (c) white-black-brown (d) brown-white-brown
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) grey-green-red (b) grey-green-orange (c) green-grey-orange (d) grey-green-yellow
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13000 Ω resistor? (a) brown-orange-orange (b) brown-orange-yellow (c) orange-brown-orange (d) brown-orange-red
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) green-black-yellow (b) blue-green-orange (c) green-black-red (d) green-black-orange
  27. 27.🌈 A resistor has the colour bands red, grey, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-brown (b) green-red-red (c) red-green-red (d) red-green-orange
  31. 31.🌈 A resistor has the colour bands orange, orange, brown. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does green stand for?
  33. 33.🌈 In the resistor colour code, which number does grey stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-yellow-brown (b) green-yellow-black (c) yellow-green-black (d) yellow-yellow-black
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) green-yellow-black (b) green-green-black (c) yellow-green-brown (d) yellow-green-black
  36. 36.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9100 Ω resistor? (a) brown-white-red (b) white-brown-orange (c) white-brown-brown (d) white-brown-red
  38. 38.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands yellow, red, orange. What is its value (in ohms)?

Answer key

  1. 2
  2. red-brown-brown
  3. 90
  4. 880
  5. 5 %
  6. 9
  7. 4
  8. violet-black-orange
  9. 200
  10. 970
  11. 860
  12. red-blue-red
  13. 20
  14. 6
  15. 33
  16. 88
  17. red-grey-black
  18. the one nearest an end
  19. 3
  20. 3200
  21. violet-red-red
  22. 71
  23. white-black-brown
  24. grey-green-orange
  25. brown-orange-orange
  26. green-black-orange
  27. 28
  28. 94000
  29. 21
  30. red-green-red
  31. 330
  32. 5
  33. 8
  34. yellow-yellow-black
  35. yellow-green-black
  36. 11000
  37. white-brown-red
  38. 25000
  39. 82
  40. 42000

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