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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 906 · 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 green, black, orange. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 610 Ω resistor? (a) brown-blue-brown (b) blue-brown-black (c) blue-brown-red (d) blue-brown-brown
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5400 Ω resistor? (a) green-yellow-orange (b) green-yellow-brown (c) green-yellow-red (d) yellow-green-red
  4. 4.🌈 In the resistor colour code, which number does black stand for?
  5. 5.🌈 In the resistor colour code, which number does red stand for?
  6. 6.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  8. 8.🌈 In the resistor colour code, which number does violet stand for?
  9. 9.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  10. 10.🌈 In the resistor colour code, which number does white stand for?
  11. 11.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does orange stand for?
  13. 13.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands white, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does grey stand for?
  16. 16.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 890 Ω resistor? (a) white-grey-brown (b) grey-white-black (c) grey-white-brown (d) grey-white-red
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6100 Ω resistor? (a) brown-blue-red (b) blue-brown-orange (c) blue-brown-red (d) blue-brown-brown
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-red (b) red-grey-black (c) grey-red-brown (d) red-grey-brown
  21. 21.🌈 In the resistor colour code, which number does blue stand for?
  22. 22.🌈 In the resistor colour code, which number does green stand for?
  23. 23.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does yellow stand for?
  25. 25.🌈 A resistor has the colour bands white, blue, orange. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54000 Ω resistor? (a) green-yellow-orange (b) green-yellow-red (c) green-yellow-yellow (d) yellow-green-orange
  27. 27.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 400 Ω resistor? (a) yellow-black-black (b) yellow-black-red (c) yellow-black-brown (d) green-yellow-brown
  29. 29.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84000 Ω resistor? (a) grey-yellow-orange (b) yellow-grey-orange (c) grey-yellow-yellow (d) grey-yellow-red
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) violet-blue-black (b) violet-blue-red (c) blue-violet-brown (d) violet-blue-brown
  35. 35.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, green, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) blue-grey-black (b) grey-green-black (c) green-grey-black (d) green-grey-brown
  38. 38.🌈 A resistor has the colour bands grey, violet, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 50000
  2. blue-brown-brown
  3. green-yellow-red
  4. 0
  5. 2
  6. 70
  7. 5 %
  8. 7
  9. the one nearest an end
  10. 9
  11. 85000
  12. 3
  13. 140
  14. 94
  15. 8
  16. 23
  17. 54
  18. grey-white-brown
  19. blue-brown-red
  20. red-grey-brown
  21. 6
  22. 5
  23. 39
  24. 4
  25. 96000
  26. green-yellow-orange
  27. 890
  28. yellow-black-brown
  29. 2.8
  30. 620
  31. 730
  32. 370
  33. grey-yellow-orange
  34. violet-blue-brown
  35. 430
  36. 55
  37. green-grey-black
  38. 870
  39. 450
  40. 23

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