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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 878 · 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 brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) violet-red-brown (b) grey-red-black (c) violet-red-black (d) red-violet-black
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) orange-white-brown (b) white-orange-red (c) white-orange-brown (d) white-orange-black
  4. 4.🌈 In the resistor colour code, which number does orange stand for?
  5. 5.🌈 In the resistor colour code, which number does blue stand for?
  6. 6.🌈 In the resistor colour code, which number does black stand for?
  7. 7.🌈 A resistor has the colour bands brown, blue, brown. What is its value (in ohms)?
  8. 8.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 50 % (d) 0 %
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) red-green-black (b) red-green-brown (c) red-green-red (d) green-red-brown
  11. 11.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14 Ω resistor? (a) yellow-brown-black (b) brown-yellow-black (c) red-yellow-black (d) brown-yellow-brown
  13. 13.🌈 In the resistor colour code, which number does grey stand for?
  14. 14.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands white, orange, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands brown, white, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does yellow stand for?
  21. 21.🌈 In the resistor colour code, which number does violet stand for?
  22. 22.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70000 Ω resistor? (a) grey-violet-orange (b) violet-black-orange (c) violet-black-red (d) violet-black-yellow
  24. 24.🌈 A resistor has the colour bands yellow, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36 Ω resistor? (a) orange-blue-black (b) yellow-blue-black (c) orange-blue-brown (d) blue-orange-black
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31000 Ω resistor? (a) orange-brown-yellow (b) brown-orange-orange (c) orange-brown-orange (d) orange-brown-red
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8600 Ω resistor? (a) grey-blue-brown (b) blue-grey-red (c) grey-blue-orange (d) grey-blue-red
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5500 Ω resistor? (a) green-blue-red (b) green-green-orange (c) green-green-brown (d) green-green-red
  30. 30.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands yellow, white, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands green, red, red. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does brown stand for?
  35. 35.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-red (b) violet-grey-brown (c) grey-violet-black (d) grey-violet-brown
  37. 37.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
  39. 39.🌈 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
  40. 40.🌈 A resistor has the colour bands white, yellow, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 1.8
  2. violet-red-black
  3. white-orange-brown
  4. 3
  5. 6
  6. 0
  7. 160
  8. the one nearest an end
  9. 5 %
  10. red-green-brown
  11. 2
  12. brown-yellow-black
  13. 8
  14. 220
  15. 8400
  16. 93
  17. 89
  18. 1900
  19. 360
  20. 4
  21. 7
  22. 3700
  23. violet-black-orange
  24. 440
  25. 1000
  26. orange-blue-black
  27. orange-brown-orange
  28. grey-blue-red
  29. green-green-red
  30. 62000
  31. 49
  32. 6.6
  33. 5200
  34. 1
  35. 24
  36. grey-violet-brown
  37. 400
  38. 920
  39. blue-brown-red
  40. 940

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