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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 785 · 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) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  2. 2.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9000 Ω resistor? (a) white-black-brown (b) brown-white-red (c) white-black-orange (d) white-black-red
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) brown-yellow-black (b) white-yellow-brown (c) white-yellow-black (d) yellow-white-black
  7. 7.🌈 In the resistor colour code, which number does white stand for?
  8. 8.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does yellow stand for?
  10. 10.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands grey, violet, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands violet, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) green-violet-black (b) yellow-violet-brown (c) yellow-violet-black (d) violet-yellow-black
  19. 19.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does black stand for?
  21. 21.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64 Ω resistor? (a) blue-yellow-black (b) blue-yellow-brown (c) yellow-blue-black (d) violet-yellow-black
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49000 Ω resistor? (a) white-yellow-orange (b) yellow-white-red (c) yellow-white-yellow (d) yellow-white-orange
  25. 25.🌈 A resistor has the colour bands brown, white, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does blue stand for?
  28. 28.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) white-grey-orange (b) grey-black-red (c) grey-black-orange (d) grey-black-yellow
  30. 30.🌈 A resistor has the colour bands white, orange, brown. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-white-red (b) white-white-brown (c) white-black-red (d) white-white-orange
  32. 32.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands orange, blue, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  37. 37.🌈 In the resistor colour code, which number does brown stand for?
  38. 38.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands green, white, red. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does grey stand for?

Answer key

  1. the one nearest an end
  2. 53
  3. 230
  4. 5 %
  5. white-black-red
  6. white-yellow-black
  7. 9
  8. 500
  9. 4
  10. 400
  11. 87
  12. 860
  13. 74
  14. 66
  15. 210
  16. 300
  17. 220
  18. yellow-violet-black
  19. 110
  20. 0
  21. 50
  22. 63
  23. blue-yellow-black
  24. yellow-white-orange
  25. 19000
  26. 83
  27. 6
  28. 66
  29. grey-black-orange
  30. 930
  31. white-white-red
  32. 310
  33. 36
  34. 7
  35. 470
  36. 360
  37. 1
  38. 9900
  39. 5900
  40. 8

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