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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 803 · 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) 0 % (b) 25 % (c) 50 % (d) 5 %
  2. 2.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does brown stand for?
  4. 4.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) yellow-red-brown (b) yellow-red-red (c) yellow-red-black (d) red-yellow-brown
  6. 6.🌈 In the resistor colour code, which number does green stand for?
  7. 7.🌈 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
  8. 8.🌈 A resistor has the colour bands blue, white, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1900 Ω resistor? (a) brown-white-brown (b) brown-white-red (c) white-brown-red (d) brown-white-orange
  13. 13.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72000 Ω resistor? (a) violet-red-red (b) red-violet-orange (c) violet-red-yellow (d) violet-red-orange
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) blue-black-orange (b) blue-black-brown (c) blue-black-red (d) violet-blue-red
  16. 16.🌈 In the resistor colour code, which number does black stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 810 Ω resistor? (a) grey-brown-black (b) grey-brown-brown (c) grey-brown-red (d) brown-grey-brown
  18. 18.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 370 Ω resistor? (a) violet-orange-brown (b) orange-violet-brown (c) orange-violet-red (d) orange-violet-black
  20. 20.🌈 A resistor has the colour bands white, blue, brown. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-brown (b) orange-brown-black (c) red-brown-black (d) brown-red-black
  22. 22.🌈 In the resistor colour code, which number does grey stand for?
  23. 23.🌈 In the resistor colour code, which number does orange stand for?
  24. 24.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 In the resistor colour code, which number does violet stand for?
  27. 27.🌈 In the resistor colour code, which number does red stand for?
  28. 28.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86 Ω resistor? (a) white-blue-black (b) blue-grey-black (c) grey-blue-brown (d) grey-blue-black
  30. 30.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands white, green, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does blue stand for?

Answer key

  1. 5 %
  2. 88000
  3. 1
  4. 72000
  5. yellow-red-brown
  6. 5
  7. the one nearest an end
  8. 69
  9. 30
  10. 170
  11. 35000
  12. brown-white-red
  13. 57
  14. violet-red-orange
  15. blue-black-red
  16. 0
  17. grey-brown-brown
  18. 39000
  19. orange-violet-brown
  20. 960
  21. red-brown-black
  22. 8
  23. 3
  24. 4
  25. 2.1
  26. 7
  27. 2
  28. 11000
  29. grey-blue-black
  30. 89000
  31. 3.8
  32. 8.3
  33. 9500
  34. 6.3
  35. 8.1
  36. 500
  37. 730
  38. 3000
  39. 77
  40. 6

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