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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 686 · 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.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) red-brown-red (b) brown-red-red (c) brown-red-orange (d) brown-red-brown
  3. 3.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does orange stand for?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 25 % (d) 50 %
  7. 7.🌈 A resistor has the colour bands grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) yellow-grey-black (b) grey-yellow-brown (c) grey-yellow-black (d) white-yellow-black
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82000 Ω resistor? (a) red-grey-orange (b) grey-red-orange (c) grey-red-red (d) grey-red-yellow
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) violet-black-black (b) grey-violet-black (c) violet-black-brown (d) grey-black-black
  11. 11.🌈 In the resistor colour code, which number does violet stand for?
  12. 12.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does white stand for?
  14. 14.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6100 Ω resistor? (a) blue-brown-brown (b) brown-blue-red (c) blue-brown-red (d) blue-brown-orange
  16. 16.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 650 Ω resistor? (a) blue-green-red (b) blue-green-brown (c) blue-green-black (d) green-blue-brown
  18. 18.🌈 In the resistor colour code, which number does brown stand for?
  19. 19.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) orange-grey-brown (b) grey-orange-black (c) orange-grey-black (d) yellow-grey-black
  21. 21.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does grey stand for?
  25. 25.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands violet, green, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands orange, orange, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) brown-red-black (b) brown-red-brown (c) red-red-black (d) red-brown-black
  34. 34.🌈 In the resistor colour code, which number does red stand for?
  35. 35.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) red-green-black (b) red-green-red (c) red-green-brown (d) green-red-brown
  39. 39.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. brown-red-red
  3. 6
  4. 70
  5. 3
  6. 5 %
  7. 800
  8. grey-yellow-black
  9. grey-red-orange
  10. violet-black-black
  11. 7
  12. 5100
  13. 9
  14. 3
  15. blue-brown-red
  16. 9.2
  17. blue-green-brown
  18. 1
  19. 290
  20. orange-grey-black
  21. 6500
  22. 500
  23. 63000
  24. 8
  25. 76
  26. 230
  27. 53
  28. 39
  29. 75000
  30. 3200
  31. 33000
  32. 25
  33. brown-red-black
  34. 2
  35. 3.6
  36. 77
  37. 12000
  38. red-green-brown
  39. 6.5
  40. 45000

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