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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 825 · 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 gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  2. 2.🌈 A resistor has the colour bands blue, yellow, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands violet, orange, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 In the resistor colour code, which number does black stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 800 Ω resistor? (a) grey-black-brown (b) grey-black-red (c) white-grey-brown (d) grey-black-black
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78000 Ω resistor? (a) grey-violet-orange (b) violet-grey-yellow (c) violet-grey-orange (d) violet-grey-red
  9. 9.🌈 In the resistor colour code, which number does orange stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4500 Ω resistor? (a) yellow-green-orange (b) yellow-green-red (c) green-yellow-red (d) yellow-green-brown
  11. 11.🌈 In the resistor colour code, which number does red stand for?
  12. 12.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9100 Ω resistor? (a) white-brown-brown (b) white-brown-orange (c) brown-white-red (d) white-brown-red
  14. 14.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  15. 15.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  16. 16.🌈 A resistor has the colour bands blue, black, red. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 260 Ω resistor? (a) red-blue-red (b) blue-red-brown (c) red-blue-brown (d) red-blue-black
  19. 19.🌈 In the resistor colour code, which number does green stand for?
  20. 20.🌈 In the resistor colour code, which number does blue stand for?
  21. 21.🌈 A resistor has the colour bands yellow, white, brown. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does white stand for?
  23. 23.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does violet stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91000 Ω resistor? (a) white-brown-orange (b) brown-white-orange (c) white-brown-yellow (d) white-brown-red
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) yellow-orange-black (b) yellow-yellow-black (c) orange-yellow-brown (d) orange-yellow-black
  27. 27.🌈 In the resistor colour code, which number does grey stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) red-orange-orange (b) red-orange-red (c) red-orange-brown (d) orange-red-red
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) orange-black-red (b) orange-black-orange (c) orange-black-brown (d) yellow-orange-red
  30. 30.🌈 A resistor has the colour bands brown, orange, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands yellow, white, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands green, green, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands blue, blue, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands orange, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 5 %
  2. 6.4
  3. 73
  4. 38000
  5. 230
  6. 0
  7. grey-black-brown
  8. violet-grey-orange
  9. 3
  10. yellow-green-red
  11. 2
  12. 490
  13. white-brown-red
  14. 30
  15. the one nearest an end
  16. 6000
  17. 840
  18. red-blue-brown
  19. 5
  20. 6
  21. 490
  22. 9
  23. 33
  24. 7
  25. white-brown-orange
  26. orange-yellow-black
  27. 8
  28. red-orange-red
  29. orange-black-red
  30. 1300
  31. 67
  32. 49
  33. 5500
  34. 2.4
  35. 31
  36. 6600
  37. 55
  38. 380
  39. 88000
  40. 670

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