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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 907 · 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 blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) red-grey-black (b) grey-red-brown (c) white-red-black (d) grey-red-black
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83000 Ω resistor? (a) grey-orange-red (b) orange-grey-orange (c) grey-orange-yellow (d) grey-orange-orange
  4. 4.🌈 In the resistor colour code, which number does red stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1600 Ω resistor? (a) brown-blue-brown (b) brown-blue-orange (c) blue-brown-red (d) brown-blue-red
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-red-black (b) red-black-black (c) orange-black-black (d) red-black-brown
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4900 Ω resistor? (a) white-yellow-red (b) yellow-white-red (c) yellow-white-brown (d) yellow-white-orange
  8. 8.🌈 A resistor has the colour bands yellow, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) orange-red-red (b) red-black-brown (c) red-black-orange (d) red-black-red
  10. 10.🌈 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
  11. 11.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  12. 12.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5600 Ω resistor? (a) green-blue-red (b) blue-green-red (c) green-blue-brown (d) green-blue-orange
  14. 14.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does grey stand for?
  16. 16.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does green stand for?
  18. 18.🌈 In the resistor colour code, which number does yellow stand for?
  19. 19.🌈 A resistor has the colour bands orange, red, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 In the resistor colour code, which number does blue stand for?
  21. 21.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 In the resistor colour code, which number does black stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77 Ω resistor? (a) grey-violet-black (b) violet-violet-brown (c) violet-violet-black (d) violet-grey-black
  28. 28.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) violet-red-brown (b) red-violet-black (c) red-violet-red (d) red-violet-brown
  30. 30.🌈 A resistor has the colour bands yellow, grey, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands violet, white, brown. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69000 Ω resistor? (a) blue-white-yellow (b) blue-white-orange (c) blue-white-red (d) white-blue-orange
  37. 37.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74 Ω resistor? (a) violet-yellow-black (b) yellow-violet-black (c) violet-yellow-brown (d) grey-yellow-black
  39. 39.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 680
  2. grey-red-black
  3. grey-orange-orange
  4. 2
  5. brown-blue-red
  6. red-black-black
  7. yellow-white-red
  8. 460
  9. red-black-red
  10. the one nearest an end
  11. 91
  12. 5 %
  13. green-blue-red
  14. 8800
  15. 8
  16. 25
  17. 5
  18. 4
  19. 32
  20. 6
  21. 470
  22. 780
  23. 76
  24. 90000
  25. 240
  26. 0
  27. violet-violet-black
  28. 8
  29. red-violet-brown
  30. 48
  31. 88
  32. 83
  33. 1200
  34. 6.1
  35. 790
  36. blue-white-orange
  37. 51
  38. violet-yellow-black
  39. 870
  40. 110

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