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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 945 · 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 violet, white, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands violet, violet, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3200 Ω resistor? (a) red-orange-red (b) orange-red-brown (c) orange-red-orange (d) orange-red-red
  8. 8.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8400 Ω resistor? (a) grey-yellow-orange (b) yellow-grey-red (c) grey-yellow-red (d) grey-yellow-brown
  10. 10.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) white-violet-black (b) violet-white-black (c) violet-white-brown (d) grey-white-black
  12. 12.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71000 Ω resistor? (a) violet-brown-yellow (b) brown-violet-orange (c) violet-brown-orange (d) violet-brown-red
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  15. 15.🌈 A resistor has the colour bands yellow, green, red. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does orange stand for?
  17. 17.🌈 In the resistor colour code, which number does red stand for?
  18. 18.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 In the resistor colour code, which number does violet stand for?
  20. 20.🌈 A resistor has the colour bands blue, violet, orange. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does green stand for?
  22. 22.🌈 A resistor has the colour bands yellow, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-black (b) brown-orange-black (c) yellow-brown-black (d) orange-brown-brown
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-green-black (b) yellow-yellow-brown (c) yellow-yellow-black (d) green-yellow-black
  30. 30.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  31. 31.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands violet, orange, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) brown-grey-black (b) brown-grey-brown (c) red-grey-black (d) grey-brown-black
  35. 35.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 940 Ω resistor? (a) white-yellow-red (b) white-yellow-brown (c) white-yellow-black (d) yellow-white-brown

Answer key

  1. 79000
  2. 49
  3. 4
  4. 1700
  5. 77000
  6. 40
  7. orange-red-red
  8. 21
  9. grey-yellow-red
  10. 2.3
  11. violet-white-black
  12. 3100
  13. violet-brown-orange
  14. 5 %
  15. 4500
  16. 3
  17. 2
  18. 2
  19. 7
  20. 67000
  21. 5
  22. 480
  23. 52000
  24. 890
  25. 54000
  26. 100
  27. 21
  28. orange-brown-black
  29. yellow-yellow-black
  30. the one nearest an end
  31. 7.9
  32. 7300
  33. 9000
  34. brown-grey-black
  35. 41
  36. 760
  37. 800
  38. 1
  39. 4.1
  40. white-yellow-brown

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