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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 919 · 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.

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  1. 1.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands yellow, red, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 In the resistor colour code, which number does black stand for?
  4. 4.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  6. 6.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 46 Ω resistor? (a) blue-yellow-black (b) yellow-blue-brown (c) green-blue-black (d) yellow-blue-black
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8400 Ω resistor? (a) grey-yellow-orange (b) grey-yellow-red (c) yellow-grey-red (d) grey-yellow-brown
  9. 9.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does brown stand for?
  12. 12.🌈 A resistor has the colour bands red, grey, red. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does violet stand for?
  15. 15.🌈 A resistor has the colour bands green, red, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands blue, white, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands yellow, blue, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58000 Ω resistor? (a) grey-green-orange (b) green-grey-red (c) green-grey-orange (d) green-grey-yellow
  22. 22.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands yellow, violet, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands violet, blue, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) blue-brown-orange (b) brown-blue-red (c) brown-blue-yellow (d) brown-blue-orange
  27. 27.🌈 In the resistor colour code, which number does yellow stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7500 Ω resistor? (a) green-violet-red (b) violet-green-red (c) violet-green-orange (d) violet-green-brown
  29. 29.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands orange, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands violet, orange, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands green, blue, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands yellow, violet, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) violet-blue-red (b) blue-black-orange (c) blue-black-red (d) blue-black-brown
  36. 36.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands blue, green, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands yellow, orange, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) yellow-orange-brown (b) green-orange-black (c) orange-yellow-black (d) yellow-orange-black
  40. 40.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?

Answer key

  1. 870
  2. 420
  3. 0
  4. the one nearest an end
  5. 5 %
  6. 2500
  7. yellow-blue-black
  8. grey-yellow-red
  9. 2.1
  10. 64000
  11. 1
  12. 2800
  13. 180
  14. 7
  15. 52
  16. 69000
  17. 5.5
  18. 3900
  19. 4600
  20. 3
  21. green-grey-orange
  22. 7.2
  23. 4.7
  24. 76
  25. 9.8
  26. brown-blue-orange
  27. 4
  28. violet-green-red
  29. 3.9
  30. 370
  31. 7.3
  32. 5600
  33. 47
  34. 90000
  35. blue-black-red
  36. 66
  37. 65
  38. 4.3
  39. yellow-orange-black
  40. 16000

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