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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 932 · 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 yellow stand for?
  2. 2.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 In the resistor colour code, which number does grey stand for?
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
  5. 5.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) any band (d) the widest gap
  7. 7.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does green stand for?
  10. 10.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) brown-yellow-orange (b) yellow-brown-red (c) yellow-brown-orange (d) yellow-brown-yellow
  12. 12.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91 Ω resistor? (a) white-brown-brown (b) brown-white-black (c) white-brown-black (d) brown-brown-black
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) grey-orange-black (b) orange-violet-black (c) violet-orange-black (d) violet-orange-brown
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4300 Ω resistor? (a) yellow-orange-orange (b) orange-yellow-red (c) yellow-orange-brown (d) yellow-orange-red
  21. 21.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does blue stand for?
  23. 23.🌈 A resistor has the colour bands violet, white, red. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19000 Ω resistor? (a) white-brown-orange (b) brown-white-yellow (c) brown-white-red (d) brown-white-orange
  25. 25.🌈 In the resistor colour code, which number does white stand for?
  26. 26.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70000 Ω resistor? (a) grey-violet-orange (b) violet-black-red (c) violet-black-yellow (d) violet-black-orange
  28. 28.🌈 A resistor has the colour bands orange, green, brown. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91000 Ω resistor? (a) white-brown-yellow (b) brown-white-orange (c) white-brown-red (d) white-brown-orange
  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 grey, violet, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) white-violet-black (b) violet-white-brown (c) violet-white-black (d) grey-white-black
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71 Ω resistor? (a) brown-violet-black (b) grey-brown-black (c) violet-brown-brown (d) violet-brown-black
  37. 37.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) orange-brown-orange (b) orange-brown-red (c) brown-orange-red (d) orange-brown-brown
  39. 39.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-red-red (b) brown-brown-brown (c) brown-brown-orange (d) brown-brown-red

Answer key

  1. 4
  2. 6.5
  3. 8
  4. 5 %
  5. 80
  6. the one nearest an end
  7. 35
  8. 13
  9. 5
  10. 190
  11. yellow-brown-orange
  12. 11000
  13. 28000
  14. 33
  15. 690
  16. 5
  17. 2.5
  18. white-brown-black
  19. violet-orange-black
  20. yellow-orange-red
  21. 250
  22. 6
  23. 7900
  24. brown-white-orange
  25. 9
  26. 2100
  27. violet-black-orange
  28. 350
  29. white-brown-orange
  30. 5.5
  31. 87
  32. 7.1
  33. 6.7
  34. 87000
  35. violet-white-black
  36. violet-brown-black
  37. 9.7
  38. orange-brown-red
  39. 44000
  40. brown-brown-red

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