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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 827 · 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.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 In the resistor colour code, which number does black stand for?
  3. 3.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the gold band (d) the widest gap
  5. 5.🌈 In the resistor colour code, which number does violet stand for?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 550 Ω resistor? (a) green-blue-brown (b) green-green-brown (c) green-green-red (d) green-green-black
  8. 8.🌈 In the resistor colour code, which number does blue stand for?
  9. 9.🌈 In the resistor colour code, which number does white stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) red-brown-yellow (b) brown-red-orange (c) red-brown-orange (d) red-brown-red
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 160 Ω resistor? (a) brown-blue-black (b) brown-blue-red (c) blue-brown-brown (d) brown-blue-brown
  12. 12.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands violet, white, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does red stand for?
  16. 16.🌈 In the resistor colour code, which number does grey stand for?
  17. 17.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does brown stand for?
  21. 21.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71000 Ω resistor? (a) violet-brown-orange (b) brown-violet-orange (c) violet-brown-yellow (d) violet-brown-red
  23. 23.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) white-orange-brown (b) white-orange-black (c) white-orange-red (d) orange-white-brown
  26. 26.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does orange stand for?
  28. 28.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands violet, white, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands white, red, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 160
  2. 0
  3. 3.8
  4. the one nearest an end
  5. 7
  6. 5 %
  7. green-green-brown
  8. 6
  9. 9
  10. red-brown-orange
  11. brown-blue-brown
  12. 2.1
  13. 79000
  14. 28
  15. 2
  16. 8
  17. 370
  18. 2.8
  19. 94
  20. 1
  21. 25
  22. violet-brown-orange
  23. 26000
  24. 45000
  25. white-orange-brown
  26. 1.8
  27. 3
  28. 300
  29. 3000
  30. 11
  31. 680
  32. 9.6
  33. 79
  34. 4200
  35. 3700
  36. 63
  37. 92
  38. 510
  39. 390
  40. 35

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