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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 999 · 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 white, orange, brown. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does red stand for?
  3. 3.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
  4. 4.🌈 A resistor has the colour bands red, grey, orange. 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 orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  8. 8.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does black stand for?
  12. 12.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands yellow, white, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34000 Ω resistor? (a) orange-yellow-red (b) yellow-orange-orange (c) orange-yellow-orange (d) orange-yellow-yellow
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6500 Ω resistor? (a) blue-green-brown (b) blue-green-orange (c) green-blue-red (d) blue-green-red
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31000 Ω resistor? (a) orange-brown-red (b) brown-orange-orange (c) orange-brown-orange (d) orange-brown-yellow
  18. 18.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does grey stand for?
  21. 21.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) violet-red-brown (b) red-violet-brown (c) red-violet-red (d) red-violet-black
  25. 25.🌈 A resistor has the colour bands white, yellow, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) brown-white-brown (b) red-white-black (c) brown-white-black (d) white-brown-black
  29. 29.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) brown-blue-yellow (b) blue-brown-orange (c) brown-blue-red (d) brown-blue-orange
  31. 31.🌈 In the resistor colour code, which number does orange stand for?
  32. 32.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) brown-red-brown (b) brown-red-red (c) red-brown-red (d) brown-red-orange
  34. 34.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does green stand for?
  36. 36.🌈 In the resistor colour code, which number does brown stand for?
  37. 37.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 In the resistor colour code, which number does yellow stand for?
  40. 40.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?

Answer key

  1. 930
  2. 2
  3. the one nearest an end
  4. 28000
  5. 7
  6. 3.4
  7. 5 %
  8. 170
  9. 4200
  10. 63000
  11. 0
  12. 320
  13. 490
  14. 72
  15. orange-yellow-orange
  16. blue-green-red
  17. orange-brown-orange
  18. 140
  19. 420
  20. 8
  21. 51
  22. 8.7
  23. 30
  24. red-violet-brown
  25. 9.4
  26. 6500
  27. 33
  28. brown-white-black
  29. 9.7
  30. brown-blue-orange
  31. 3
  32. 25
  33. brown-red-red
  34. 86
  35. 5
  36. 1
  37. 1.7
  38. 9
  39. 4
  40. 70

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