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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 910 · 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 white stand for?
  2. 2.🌈 In the resistor colour code, which number does black stand for?
  3. 3.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  4. 4.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) blue-red-orange (b) blue-red-red (c) red-blue-red (d) blue-red-brown
  7. 7.🌈 A resistor has the colour bands yellow, red, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does violet stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93000 Ω resistor? (a) orange-white-orange (b) white-orange-yellow (c) white-orange-red (d) white-orange-orange
  11. 11.🌈 A resistor has the colour bands orange, red, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) grey-green-black (b) grey-green-brown (c) white-green-black (d) green-grey-black
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  15. 15.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 In the resistor colour code, which number does brown stand for?
  19. 19.🌈 A resistor has the colour bands green, green, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) violet-orange-black (b) grey-orange-black (c) orange-violet-black (d) violet-orange-brown
  29. 29.🌈 In the resistor colour code, which number does grey stand for?
  30. 30.🌈 A resistor has the colour bands blue, blue, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 In the resistor colour code, which number does blue stand for?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 600 Ω resistor? (a) blue-black-red (b) blue-black-black (c) blue-black-brown (d) violet-blue-brown
  36. 36.🌈 A resistor has the colour bands green, white, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands violet, white, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does red stand for?

Answer key

  1. 9
  2. 0
  3. the one nearest an end
  4. 35
  5. 310
  6. blue-red-red
  7. 42
  8. 44000
  9. 7
  10. white-orange-orange
  11. 32
  12. 14
  13. grey-green-black
  14. 5 %
  15. 42
  16. 14000
  17. 7.2
  18. 1
  19. 550
  20. 3900
  21. 710
  22. 15
  23. 980
  24. 430
  25. 63000
  26. 240
  27. 760
  28. violet-orange-black
  29. 8
  30. 660
  31. 24
  32. 78
  33. 820
  34. 6
  35. blue-black-brown
  36. 59
  37. 450
  38. 79
  39. 1000
  40. 2

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