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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 916 · 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 brown, white, red. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70000 Ω resistor? (a) violet-black-yellow (b) violet-black-orange (c) grey-violet-orange (d) violet-black-red
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 63 Ω resistor? (a) violet-orange-black (b) blue-orange-brown (c) orange-blue-black (d) blue-orange-black
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4200 Ω resistor? (a) yellow-red-brown (b) yellow-red-red (c) yellow-red-orange (d) red-yellow-red
  5. 5.🌈 A resistor has the colour bands white, orange, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands yellow, blue, red. What is its value (in ohms)?
  8. 8.🌈 In the resistor colour code, which number does black stand for?
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  10. 10.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does orange stand for?
  14. 14.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 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
  16. 16.🌈 A resistor has the colour bands blue, white, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands blue, orange, brown. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands green, brown, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 In the resistor colour code, which number does green stand for?
  20. 20.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 In the resistor colour code, which number does red stand for?
  22. 22.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does blue stand for?
  24. 24.🌈 In the resistor colour code, which number does brown stand for?
  25. 25.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) yellow-red-brown (b) yellow-red-black (c) red-yellow-brown (d) yellow-red-red
  27. 27.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) red-brown-red (b) brown-red-brown (c) brown-red-orange (d) brown-red-red
  31. 31.🌈 In the resistor colour code, which number does violet stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87000 Ω resistor? (a) violet-grey-orange (b) grey-violet-red (c) grey-violet-orange (d) grey-violet-yellow
  33. 33.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands blue, blue, orange. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands violet, green, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands orange, orange, brown. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) orange-violet-brown (b) yellow-violet-black (c) orange-violet-black (d) violet-orange-black
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) brown-violet-brown (b) brown-violet-red (c) violet-brown-brown (d) brown-violet-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) brown-black-black (b) white-black-black (c) white-black-brown (d) brown-white-black
  40. 40.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?

Answer key

  1. 1900
  2. violet-black-orange
  3. blue-orange-black
  4. yellow-red-red
  5. 93
  6. 27000
  7. 4600
  8. 0
  9. 5 %
  10. 390
  11. 98000
  12. 20
  13. 3
  14. 160
  15. the one nearest an end
  16. 69000
  17. 630
  18. 5.1
  19. 5
  20. 7
  21. 2
  22. 26000
  23. 6
  24. 1
  25. 10
  26. yellow-red-brown
  27. 3400
  28. 5100
  29. 88
  30. brown-red-red
  31. 7
  32. grey-violet-orange
  33. 840
  34. 66000
  35. 75
  36. 330
  37. orange-violet-black
  38. brown-violet-brown
  39. white-black-black
  40. 22000

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