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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 82 · 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 violet, orange, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 50 % (d) 25 %
  5. 5.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands green, orange, brown. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does violet stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87000 Ω resistor? (a) grey-violet-yellow (b) grey-violet-orange (c) violet-grey-orange (d) grey-violet-red
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 610 Ω resistor? (a) brown-blue-brown (b) blue-brown-red (c) blue-brown-brown (d) blue-brown-black
  10. 10.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does yellow stand for?
  12. 12.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  13. 13.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18000 Ω resistor? (a) grey-brown-orange (b) brown-grey-yellow (c) brown-grey-orange (d) brown-grey-red
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) violet-red-brown (b) violet-red-black (c) red-violet-black (d) grey-red-black
  17. 17.🌈 In the resistor colour code, which number does brown stand for?
  18. 18.🌈 In the resistor colour code, which number does grey stand for?
  19. 19.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) grey-violet-black (b) violet-grey-black (c) grey-violet-brown (d) white-violet-black
  21. 21.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 In the resistor colour code, which number does blue stand for?
  24. 24.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 In the resistor colour code, which number does black stand for?
  27. 27.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 In the resistor colour code, which number does orange stand for?
  29. 29.🌈 A resistor has the colour bands red, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands blue, blue, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands yellow, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7500 Ω resistor? (a) green-violet-red (b) violet-green-brown (c) violet-green-orange (d) violet-green-red
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-black (b) red-brown-brown (c) brown-red-black (d) orange-brown-black
  38. 38.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands yellow, violet, orange. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does green stand for?

Answer key

  1. 73000
  2. 9100
  3. 71
  4. 5 %
  5. 82000
  6. 530
  7. 7
  8. grey-violet-orange
  9. blue-brown-brown
  10. 6.9
  11. 4
  12. the one nearest an end
  13. 99
  14. 170
  15. brown-grey-orange
  16. violet-red-black
  17. 1
  18. 8
  19. 1200
  20. grey-violet-black
  21. 6200
  22. 250
  23. 6
  24. 35
  25. 11
  26. 0
  27. 730
  28. 3
  29. 270
  30. 6600
  31. 480
  32. 740
  33. 97
  34. 63
  35. 3.4
  36. violet-green-red
  37. red-brown-black
  38. 67
  39. 47000
  40. 5

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