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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 889 · 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) 5 % (b) 0 % (c) 25 % (d) 50 %
  2. 2.🌈 In the resistor colour code, which number does yellow stand for?
  3. 3.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands red, orange, red. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does orange stand for?
  7. 7.🌈 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
  8. 8.🌈 A resistor has the colour bands yellow, yellow, red. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 In the resistor colour code, which number does violet stand for?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 860 Ω resistor? (a) blue-grey-brown (b) grey-blue-brown (c) grey-blue-red (d) grey-blue-black
  12. 12.🌈 A resistor has the colour bands brown, orange, red. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands green, grey, black. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92000 Ω resistor? (a) white-red-yellow (b) white-red-orange (c) white-red-red (d) red-white-orange
  15. 15.🌈 A resistor has the colour bands yellow, blue, brown. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does red stand for?
  17. 17.🌈 A resistor has the colour bands white, green, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands violet, red, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6900 Ω resistor? (a) blue-white-orange (b) white-blue-red (c) blue-white-brown (d) blue-white-red
  23. 23.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 In the resistor colour code, which number does brown stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56 Ω resistor? (a) green-blue-black (b) green-blue-brown (c) blue-blue-black (d) blue-green-black
  28. 28.🌈 A resistor has the colour bands green, white, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands orange, grey, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does black stand for?
  32. 32.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11000 Ω resistor? (a) brown-red-orange (b) brown-brown-yellow (c) brown-brown-red (d) brown-brown-orange
  34. 34.🌈 In the resistor colour code, which number does blue stand for?
  35. 35.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands grey, red, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?

Answer key

  1. 5 %
  2. 4
  3. 9.5
  4. 2300
  5. 3300
  6. 3
  7. the one nearest an end
  8. 4400
  9. 3.5
  10. 7
  11. grey-blue-brown
  12. 1300
  13. 58
  14. white-red-orange
  15. 460
  16. 2
  17. 9500
  18. 7
  19. 5
  20. 7200
  21. 5.2
  22. blue-white-red
  23. 63
  24. 840
  25. 220
  26. 1
  27. green-blue-black
  28. 5900
  29. 3800
  30. 680
  31. 0
  32. 3.3
  33. brown-brown-orange
  34. 6
  35. 520
  36. 82
  37. 7.6
  38. 72
  39. 230
  40. 54

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