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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 893 · 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 yellow, orange, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands red, orange, red. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) grey-brown-black (b) brown-grey-brown (c) red-grey-black (d) brown-grey-black
  6. 6.🌈 In the resistor colour code, which number does blue stand for?
  7. 7.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
  10. 10.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69000 Ω resistor? (a) blue-white-red (b) white-blue-orange (c) blue-white-orange (d) blue-white-yellow
  12. 12.🌈 In the resistor colour code, which number does brown stand for?
  13. 13.🌈 In the resistor colour code, which number does violet stand for?
  14. 14.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands white, white, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does red stand for?
  23. 23.🌈 In the resistor colour code, which number does white stand for?
  24. 24.🌈 A resistor has the colour bands grey, violet, black. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) white-grey-black (b) grey-black-black (c) white-black-black (d) grey-black-brown
  26. 26.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands violet, blue, brown. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) red-black-red (b) red-black-orange (c) orange-red-red (d) red-black-brown
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40000 Ω resistor? (a) yellow-black-orange (b) yellow-black-red (c) green-yellow-orange (d) yellow-black-yellow
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 890 Ω resistor? (a) white-grey-brown (b) grey-white-brown (c) grey-white-black (d) grey-white-red
  36. 36.🌈 A resistor has the colour bands yellow, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) brown-white-brown (b) white-black-red (c) white-black-brown (d) white-black-black
  38. 38.🌈 A resistor has the colour bands green, grey, brown. What is its value (in ohms)?
  39. 39.🌈 In the resistor colour code, which number does orange stand for?
  40. 40.🌈 A resistor has the colour bands white, orange, brown. What is its value (in ohms)?

Answer key

  1. 4.3
  2. 2300
  3. 1700
  4. 5 %
  5. brown-grey-black
  6. 6
  7. 370
  8. 14
  9. the one nearest an end
  10. 290
  11. blue-white-orange
  12. 1
  13. 7
  14. 760
  15. 3.1
  16. 21000
  17. 6.3
  18. 7.6
  19. 240
  20. 990
  21. 22000
  22. 2
  23. 9
  24. 87
  25. grey-black-black
  26. 51
  27. 4.1
  28. 1.5
  29. 54000
  30. 350
  31. 760
  32. 150
  33. red-black-red
  34. yellow-black-orange
  35. grey-white-brown
  36. 440
  37. white-black-brown
  38. 580
  39. 3
  40. 930

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