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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 747 · 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.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
  2. 2.🌈 A resistor has the colour bands violet, white, black. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does black stand for?
  4. 4.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7600 Ω resistor? (a) violet-blue-brown (b) violet-blue-orange (c) violet-blue-red (d) blue-violet-red
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  7. 7.🌈 In the resistor colour code, which number does orange stand for?
  8. 8.🌈 In the resistor colour code, which number does violet stand for?
  9. 9.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does green stand for?
  11. 11.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does brown stand for?
  13. 13.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does red stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) grey-violet-black (b) violet-grey-brown (c) violet-grey-black (d) grey-grey-black
  17. 17.🌈 A resistor has the colour bands white, green, red. What is its value (in ohms)?
  18. 18.🌈 In the resistor colour code, which number does white stand for?
  19. 19.🌈 In the resistor colour code, which number does yellow stand for?
  20. 20.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69 Ω resistor? (a) blue-white-brown (b) white-blue-black (c) blue-white-black (d) violet-white-black
  26. 26.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90000 Ω resistor? (a) white-black-yellow (b) white-black-orange (c) brown-white-orange (d) white-black-red
  28. 28.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands green, white, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands green, grey, orange. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-orange-black (b) red-red-brown (c) orange-red-black (d) red-red-black
  32. 32.🌈 A resistor has the colour bands white, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands red, grey, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands orange, green, red. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 300 Ω resistor? (a) orange-black-black (b) orange-black-red (c) yellow-orange-brown (d) orange-black-brown
  40. 40.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. 79
  3. 0
  4. 81000
  5. violet-blue-red
  6. 5 %
  7. 3
  8. 7
  9. 150
  10. 5
  11. 4.2
  12. 1
  13. 5.4
  14. 41000
  15. 2
  16. violet-grey-black
  17. 9500
  18. 9
  19. 4
  20. 79
  21. 790
  22. 3.5
  23. 77
  24. 990
  25. blue-white-black
  26. 7000
  27. white-black-orange
  28. 89000
  29. 59
  30. 58000
  31. red-red-black
  32. 930
  33. 750
  34. 300
  35. 28
  36. 1.5
  37. 360
  38. 3500
  39. orange-black-brown
  40. 690

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