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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 970 · 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 white, green, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does grey stand for?
  4. 4.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  5. 5.🌈 In the resistor colour code, which number does blue stand for?
  6. 6.🌈 In the resistor colour code, which number does brown stand for?
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  8. 8.🌈 In the resistor colour code, which number does white stand for?
  9. 9.🌈 In the resistor colour code, which number does black stand for?
  10. 10.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does violet stand for?
  12. 12.🌈 In the resistor colour code, which number does red stand for?
  13. 13.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26000 Ω resistor? (a) red-blue-red (b) blue-red-orange (c) red-blue-orange (d) red-blue-yellow
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33 Ω resistor? (a) yellow-orange-black (b) orange-yellow-black (c) orange-orange-brown (d) orange-orange-black
  16. 16.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) white-red-black (b) red-grey-black (c) grey-red-black (d) grey-red-brown
  20. 20.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands violet, white, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) brown-grey-black (b) brown-grey-brown (c) red-grey-black (d) grey-brown-black
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) red-blue-orange (b) blue-red-yellow (c) blue-red-red (d) blue-red-orange
  25. 25.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) brown-grey-brown (b) brown-grey-black (c) brown-grey-red (d) grey-brown-brown
  27. 27.🌈 A resistor has the colour bands green, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77 Ω resistor? (a) violet-violet-brown (b) grey-violet-black (c) violet-grey-black (d) violet-violet-black
  30. 30.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) grey-yellow-red (b) yellow-grey-brown (c) yellow-grey-red (d) yellow-grey-orange
  32. 32.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands orange, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26 Ω resistor? (a) red-blue-brown (b) red-blue-black (c) orange-blue-black (d) blue-red-black
  37. 37.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) white-brown-brown (b) brown-white-red (c) brown-white-brown (d) brown-white-black
  40. 40.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 950
  2. 1800
  3. 8
  4. the one nearest an end
  5. 6
  6. 1
  7. 5 %
  8. 9
  9. 0
  10. 5.5
  11. 7
  12. 2
  13. 14
  14. red-blue-orange
  15. orange-orange-black
  16. 350
  17. 23
  18. 860
  19. grey-red-black
  20. 2.3
  21. 79
  22. 18000
  23. brown-grey-black
  24. blue-red-orange
  25. 650
  26. brown-grey-brown
  27. 530
  28. 890
  29. violet-violet-black
  30. 63000
  31. yellow-grey-red
  32. 9000
  33. 680
  34. 3
  35. 370
  36. red-blue-black
  37. 16000
  38. 31000
  39. brown-white-brown
  40. 27

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