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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 885 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  2. 2.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
  3. 3.🌈 In the resistor colour code, which number does white stand for?
  4. 4.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does violet stand for?
  6. 6.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does orange stand for?
  8. 8.🌈 A resistor has the colour bands grey, blue, red. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands grey, red, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) grey-yellow-brown (b) white-yellow-black (c) grey-yellow-black (d) yellow-grey-black
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) brown-blue-black (b) blue-brown-brown (c) violet-brown-black (d) blue-brown-black
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) brown-black-black (b) red-brown-black (c) red-black-black (d) brown-black-brown
  14. 14.🌈 In the resistor colour code, which number does red stand for?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-black (b) yellow-brown-black (c) brown-orange-black (d) orange-brown-brown
  16. 16.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  17. 17.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  18. 18.🌈 In the resistor colour code, which number does yellow stand for?
  19. 19.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 In the resistor colour code, which number does black stand for?
  22. 22.🌈 In the resistor colour code, which number does brown stand for?
  23. 23.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8400 Ω resistor? (a) grey-yellow-orange (b) yellow-grey-red (c) grey-yellow-brown (d) grey-yellow-red
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 700 Ω resistor? (a) violet-black-red (b) grey-violet-brown (c) violet-black-black (d) violet-black-brown
  26. 26.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4900 Ω resistor? (a) yellow-white-orange (b) white-yellow-red (c) yellow-white-red (d) yellow-white-brown
  29. 29.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands red, white, red. 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 yellow, blue, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77000 Ω resistor? (a) violet-violet-red (b) violet-violet-orange (c) violet-grey-orange (d) violet-violet-yellow
  35. 35.🌈 A resistor has the colour bands yellow, white, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?

Answer key

  1. 2900
  2. the one nearest an end
  3. 9
  4. 27
  5. 7
  6. 4800
  7. 3
  8. 8600
  9. 82
  10. 56
  11. grey-yellow-black
  12. blue-brown-black
  13. brown-black-black
  14. 2
  15. orange-brown-black
  16. 200
  17. 5 %
  18. 4
  19. 410
  20. 10
  21. 0
  22. 1
  23. 94000
  24. grey-yellow-red
  25. violet-black-brown
  26. 180
  27. 6.6
  28. yellow-white-red
  29. 1.4
  30. 5.5
  31. 2.9
  32. 83
  33. 46
  34. violet-violet-orange
  35. 49000
  36. 79
  37. 54000
  38. 4.2
  39. 3100
  40. 3000

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