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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 655 · 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 orange, red, black. What is its value (in ohms)?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
  3. 3.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8800 Ω resistor? (a) grey-grey-red (b) grey-grey-orange (c) grey-grey-brown (d) grey-white-red
  6. 6.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  7. 7.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49 Ω resistor? (a) yellow-white-black (b) yellow-white-brown (c) white-yellow-black (d) green-white-black
  9. 9.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does red stand for?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) grey-blue-black (b) violet-blue-black (c) violet-blue-brown (d) blue-violet-black
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6700 Ω resistor? (a) blue-violet-brown (b) violet-blue-red (c) blue-violet-red (d) blue-violet-orange
  13. 13.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) red-orange-red (b) red-orange-orange (c) red-orange-yellow (d) orange-red-orange
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) orange-brown-black (b) red-brown-brown (c) brown-red-black (d) red-brown-black
  16. 16.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does white stand for?
  18. 18.🌈 A resistor has the colour bands orange, green, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6400 Ω resistor? (a) blue-yellow-brown (b) blue-yellow-orange (c) yellow-blue-red (d) blue-yellow-red
  23. 23.🌈 In the resistor colour code, which number does yellow stand for?
  24. 24.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does brown stand for?
  26. 26.🌈 A resistor has the colour bands white, blue, orange. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11000 Ω resistor? (a) brown-brown-red (b) brown-brown-yellow (c) brown-red-orange (d) brown-brown-orange
  28. 28.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does orange stand for?
  36. 36.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98000 Ω resistor? (a) white-grey-yellow (b) white-grey-red (c) white-grey-orange (d) grey-white-orange
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 640 Ω resistor? (a) blue-yellow-red (b) blue-yellow-black (c) yellow-blue-brown (d) blue-yellow-brown
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) yellow-grey-red (b) yellow-grey-brown (c) yellow-grey-orange (d) grey-yellow-red
  40. 40.🌈 In the resistor colour code, which number does grey stand for?

Answer key

  1. 32
  2. 5 %
  3. 470
  4. 7.4
  5. grey-grey-red
  6. the one nearest an end
  7. 1200
  8. yellow-white-black
  9. 25
  10. 2
  11. violet-blue-black
  12. blue-violet-red
  13. 910
  14. red-orange-orange
  15. red-brown-black
  16. 54
  17. 9
  18. 350
  19. 72
  20. 5.5
  21. 25000
  22. blue-yellow-red
  23. 4
  24. 960
  25. 1
  26. 96000
  27. brown-brown-orange
  28. 92
  29. 2200
  30. 7.2
  31. 230
  32. 87000
  33. 540
  34. 59
  35. 3
  36. 400
  37. white-grey-orange
  38. blue-yellow-brown
  39. yellow-grey-red
  40. 8

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