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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 754 · 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.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 In the resistor colour code, which number does black stand for?
  4. 4.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does violet stand for?
  6. 6.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the widest gap (d) the one nearest an end
  7. 7.🌈 A resistor has the colour bands red, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands green, white, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands violet, brown, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) blue-violet-brown (b) violet-blue-red (c) violet-blue-black (d) violet-blue-brown
  17. 17.🌈 A resistor has the colour bands red, violet, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands yellow, brown, red. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does brown stand for?
  21. 21.🌈 A resistor has the colour bands brown, white, red. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) violet-green-brown (b) violet-green-black (c) green-violet-black (d) grey-green-black
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-brown (b) yellow-brown-black (c) brown-orange-black (d) orange-brown-black
  24. 24.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands yellow, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 370 Ω resistor? (a) orange-violet-red (b) orange-violet-black (c) orange-violet-brown (d) violet-orange-brown
  27. 27.🌈 A resistor has the colour bands violet, white, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands yellow, black, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands violet, yellow, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands blue, white, orange. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) brown-green-red (b) brown-green-orange (c) brown-green-yellow (d) green-brown-orange
  32. 32.🌈 In the resistor colour code, which number does green stand for?
  33. 33.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) blue-brown-yellow (b) blue-brown-orange (c) blue-brown-red (d) brown-blue-orange
  35. 35.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, violet, orange. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-white-red (b) white-white-orange (c) white-white-brown (d) white-black-red
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) red-black-orange (b) red-black-red (c) orange-red-red (d) red-black-brown
  39. 39.🌈 A resistor has the colour bands yellow, green, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 5 %
  2. 6
  3. 0
  4. 180
  5. 7
  6. the one nearest an end
  7. 280
  8. 59
  9. 53
  10. 86
  11. 9.7
  12. 170
  13. 71
  14. 46
  15. 1.5
  16. violet-blue-brown
  17. 2700
  18. 780
  19. 4100
  20. 1
  21. 1900
  22. violet-green-black
  23. orange-brown-black
  24. 57
  25. 480
  26. orange-violet-brown
  27. 790
  28. 4000
  29. 74000
  30. 69000
  31. brown-green-orange
  32. 5
  33. 51
  34. blue-brown-orange
  35. 350
  36. 57000
  37. white-white-red
  38. red-black-red
  39. 45
  40. 4.8

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