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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 890 · 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 orange, blue, red. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 In the resistor colour code, which number does blue 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 resistor has the colour bands blue, white, red. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands green, violet, black. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does brown stand for?
  8. 8.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1700 Ω resistor? (a) brown-violet-orange (b) brown-violet-brown (c) brown-violet-red (d) violet-brown-red
  11. 11.🌈 A resistor has the colour bands grey, violet, black. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 820 Ω resistor? (a) grey-red-red (b) grey-red-black (c) red-grey-brown (d) grey-red-brown
  13. 13.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  15. 15.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does yellow stand for?
  17. 17.🌈 In the resistor colour code, which number does violet stand for?
  18. 18.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 60 Ω resistor? (a) blue-black-brown (b) blue-black-black (c) violet-black-black (d) violet-blue-black
  20. 20.🌈 A resistor has the colour bands orange, green, black. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does red stand for?
  22. 22.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does green stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4700 Ω resistor? (a) yellow-violet-red (b) yellow-violet-brown (c) violet-yellow-red (d) yellow-violet-orange
  26. 26.🌈 A resistor has the colour bands violet, white, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6100 Ω resistor? (a) blue-brown-red (b) brown-blue-red (c) blue-brown-orange (d) blue-brown-brown
  29. 29.🌈 In the resistor colour code, which number does orange stand for?
  30. 30.🌈 A resistor has the colour bands grey, orange, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 810 Ω resistor? (a) grey-brown-brown (b) grey-brown-red (c) grey-brown-black (d) brown-grey-brown
  33. 33.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands yellow, yellow, red. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) orange-black-orange (b) yellow-orange-orange (c) orange-black-red (d) orange-black-yellow
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 990 Ω resistor? (a) white-white-black (b) white-white-red (c) white-white-brown (d) white-black-brown
  37. 37.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) violet-orange-orange (b) violet-orange-red (c) orange-violet-orange (d) violet-orange-yellow
  39. 39.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?

Answer key

  1. 3600
  2. 24
  3. 6
  4. the one nearest an end
  5. 6900
  6. 57
  7. 1
  8. 17
  9. 15000
  10. brown-violet-red
  11. 87
  12. grey-red-brown
  13. 70
  14. 5 %
  15. 2.4
  16. 4
  17. 7
  18. 29
  19. blue-black-black
  20. 35
  21. 2
  22. 400
  23. 290
  24. 5
  25. yellow-violet-red
  26. 79
  27. 7.4
  28. blue-brown-red
  29. 3
  30. 830
  31. 70
  32. grey-brown-brown
  33. 510
  34. 4400
  35. orange-black-orange
  36. white-white-brown
  37. 26000
  38. violet-orange-orange
  39. 100
  40. 150

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