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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 836 · 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, brown, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands white, green, brown. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) blue-red-red (b) blue-red-orange (c) blue-red-yellow (d) red-blue-orange
  6. 6.🌈 A resistor has the colour bands green, orange, brown. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does orange stand for?
  8. 8.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  9. 9.🌈 In the resistor colour code, which number does black stand for?
  10. 10.🌈 A resistor has the colour bands orange, white, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 50 % (d) 25 %
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26000 Ω resistor? (a) red-blue-orange (b) blue-red-orange (c) red-blue-yellow (d) red-blue-red
  13. 13.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands yellow, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does green stand for?
  16. 16.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands yellow, white, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 650 Ω resistor? (a) blue-green-brown (b) green-blue-brown (c) blue-green-black (d) blue-green-red
  19. 19.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does grey stand for?
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 In the resistor colour code, which number does red stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) yellow-violet-black (b) violet-orange-black (c) orange-violet-black (d) orange-violet-brown
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) red-brown-orange (b) brown-black-red (c) brown-black-orange (d) brown-black-yellow
  25. 25.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) green-grey-black (b) grey-green-black (c) green-grey-brown (d) blue-grey-black
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95000 Ω resistor? (a) green-white-orange (b) white-green-yellow (c) white-green-orange (d) white-green-red
  28. 28.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands brown, white, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands orange, red, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 720 Ω resistor? (a) red-violet-brown (b) violet-red-black (c) violet-red-red (d) violet-red-brown
  34. 34.🌈 In the resistor colour code, which number does white stand for?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) brown-black-red (b) brown-black-brown (c) brown-black-orange (d) red-brown-red
  36. 36.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) grey-red-red (b) red-grey-orange (c) red-grey-brown (d) red-grey-red
  38. 38.🌈 A resistor has the colour bands white, green, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59000 Ω resistor? (a) green-white-red (b) green-white-yellow (c) white-green-orange (d) green-white-orange

Answer key

  1. 31
  2. 8.3
  3. 950
  4. 90
  5. blue-red-orange
  6. 530
  7. 3
  8. the one nearest an end
  9. 0
  10. 39
  11. 5 %
  12. red-blue-orange
  13. 30000
  14. 480
  15. 5
  16. 9
  17. 4.9
  18. blue-green-brown
  19. 46
  20. 8
  21. 1
  22. 2
  23. orange-violet-black
  24. brown-black-orange
  25. 180
  26. green-grey-black
  27. white-green-orange
  28. 38
  29. 1.9
  30. 320
  31. 22
  32. 240
  33. violet-red-brown
  34. 9
  35. brown-black-red
  36. 52000
  37. red-grey-red
  38. 95000
  39. 63000
  40. green-white-orange

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