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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 958 · 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, brown, brown. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33000 Ω resistor? (a) orange-orange-yellow (b) orange-orange-red (c) orange-orange-orange (d) orange-yellow-orange
  3. 3.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
  8. 8.🌈 In the resistor colour code, which number does orange stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39000 Ω resistor? (a) orange-white-red (b) white-orange-orange (c) orange-white-yellow (d) orange-white-orange
  10. 10.🌈 In the resistor colour code, which number does black stand for?
  11. 11.🌈 In the resistor colour code, which number does blue stand for?
  12. 12.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does violet stand for?
  14. 14.🌈 A resistor has the colour bands white, black, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands white, brown, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 In the resistor colour code, which number does red stand for?
  19. 19.🌈 A resistor has the colour bands yellow, black, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) grey-violet-brown (b) violet-grey-black (c) grey-violet-black (d) white-violet-black
  21. 21.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 50 % (d) 25 %
  22. 22.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  23. 23.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands green, brown, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82000 Ω resistor? (a) red-grey-orange (b) grey-red-orange (c) grey-red-yellow (d) grey-red-red
  32. 32.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands orange, yellow, black. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9800 Ω resistor? (a) white-grey-brown (b) white-grey-red (c) white-grey-orange (d) grey-white-red
  37. 37.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands violet, white, black. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) orange-brown-brown (b) orange-brown-orange (c) orange-brown-red (d) brown-orange-red
  40. 40.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?

Answer key

  1. 710
  2. orange-orange-orange
  3. 4.2
  4. 77
  5. 7.6
  6. 110
  7. 53000
  8. 3
  9. orange-white-orange
  10. 0
  11. 6
  12. 2.3
  13. 7
  14. 900
  15. 760
  16. 200
  17. 91
  18. 2
  19. 40
  20. grey-violet-black
  21. 5 %
  22. the one nearest an end
  23. 14
  24. 5.1
  25. 8.9
  26. 420
  27. 300
  28. 7.1
  29. 44
  30. 67
  31. grey-red-orange
  32. 41
  33. 920
  34. 220
  35. 34
  36. white-grey-red
  37. 100
  38. 79
  39. orange-brown-red
  40. 130

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