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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 223 · 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 grey, green, orange. What is its value in kilo-ohms (kΩ)? =
  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 15 Ω resistor? (a) brown-green-brown (b) brown-green-black (c) green-brown-black (d) red-green-black
  4. 4.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
  5. 5.🌈 In the resistor colour code, which number does orange stand for?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8000 Ω resistor? (a) white-grey-red (b) grey-black-orange (c) grey-black-red (d) grey-black-brown
  7. 7.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) violet-red-brown (b) red-violet-brown (c) red-violet-black (d) red-violet-red
  9. 9.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 50 % (d) 0 %
  11. 11.🌈 In the resistor colour code, which number does white stand for?
  12. 12.🌈 In the resistor colour code, which number does grey stand for?
  13. 13.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does black stand for?
  15. 15.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 460 Ω resistor? (a) yellow-blue-red (b) yellow-blue-black (c) blue-yellow-brown (d) yellow-blue-brown
  17. 17.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 810 Ω resistor? (a) grey-brown-red (b) brown-grey-brown (c) grey-brown-brown (d) grey-brown-black
  19. 19.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-brown (b) brown-orange-black (c) orange-brown-black (d) yellow-brown-black
  22. 22.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does blue stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-orange (c) red-orange-red (d) red-orange-yellow
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 560 Ω resistor? (a) green-blue-brown (b) green-blue-red (c) green-blue-black (d) blue-green-brown
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) grey-red-orange (b) red-grey-orange (c) red-grey-yellow (d) red-grey-red
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-brown (b) red-red-red (c) red-red-black (d) red-orange-brown
  32. 32.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does violet stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76000 Ω resistor? (a) blue-violet-orange (b) violet-blue-red (c) violet-blue-yellow (d) violet-blue-orange
  35. 35.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does brown stand for?
  37. 37.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 850 Ω resistor? (a) grey-green-red (b) grey-green-black (c) grey-green-brown (d) green-grey-brown

Answer key

  1. 85
  2. 2
  3. brown-green-black
  4. the one nearest an end
  5. 3
  6. grey-black-red
  7. 33
  8. red-violet-brown
  9. 43
  10. 5 %
  11. 9
  12. 8
  13. 1200
  14. 0
  15. 1100
  16. yellow-blue-brown
  17. 6500
  18. grey-brown-brown
  19. 29
  20. 6300
  21. orange-brown-black
  22. 700
  23. 20
  24. 920
  25. 37
  26. 420
  27. 6
  28. red-orange-orange
  29. green-blue-brown
  30. red-grey-orange
  31. red-red-brown
  32. 5700
  33. 7
  34. violet-blue-orange
  35. 720
  36. 1
  37. 22
  38. 240
  39. 600
  40. grey-green-brown

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