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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 805 · 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.🌈 In the resistor colour code, which number does black stand for?
  2. 2.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-violet-black (b) violet-black-brown (c) violet-black-black (d) grey-black-black
  4. 4.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
  6. 6.🌈 A resistor has the colour bands orange, yellow, brown. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) violet-red-orange (b) red-violet-red (c) red-violet-yellow (d) red-violet-orange
  8. 8.🌈 In the resistor colour code, which number does blue stand for?
  9. 9.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) yellow-brown-yellow (b) yellow-brown-red (c) brown-yellow-orange (d) yellow-brown-orange
  11. 11.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 500 Ω resistor? (a) blue-green-brown (b) green-black-red (c) green-black-black (d) green-black-brown
  13. 13.🌈 In the resistor colour code, which number does violet stand for?
  14. 14.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands orange, green, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands green, orange, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands violet, orange, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands green, white, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does white stand for?
  25. 25.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 330 Ω resistor? (a) orange-orange-red (b) orange-orange-black (c) orange-yellow-brown (d) orange-orange-brown
  27. 27.🌈 A resistor has the colour bands white, brown, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 In the resistor colour code, which number does green stand for?
  30. 30.🌈 A resistor has the colour bands yellow, violet, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53 Ω resistor? (a) green-orange-brown (b) orange-green-black (c) green-orange-black (d) blue-orange-black
  34. 34.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands yellow, black, red. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33000 Ω resistor? (a) orange-yellow-orange (b) orange-orange-red (c) orange-orange-orange (d) orange-orange-yellow
  38. 38.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, violet, brown. What is its value (in ohms)?

Answer key

  1. 0
  2. 11
  3. violet-black-black
  4. the one nearest an end
  5. 5 %
  6. 340
  7. red-violet-orange
  8. 6
  9. 3.7
  10. yellow-brown-orange
  11. 80
  12. green-black-brown
  13. 7
  14. 61
  15. 350
  16. 5.3
  17. 470
  18. 1.2
  19. 220
  20. 86
  21. 7.3
  22. 36
  23. 59
  24. 9
  25. 35
  26. orange-orange-brown
  27. 91
  28. 870
  29. 5
  30. 47000
  31. 18
  32. 290
  33. green-orange-black
  34. 1.7
  35. 7800
  36. 4000
  37. orange-orange-orange
  38. 760
  39. 9900
  40. 270

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