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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 520 · 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 orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39000 Ω resistor? (a) orange-white-red (b) orange-white-yellow (c) orange-white-orange (d) white-orange-orange
  3. 3.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands blue, brown, black. What is its value (in ohms)?
  8. 8.🌈 In the resistor colour code, which number does blue stand for?
  9. 9.🌈 A resistor has the colour bands green, white, orange. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-red-black (b) red-black-brown (c) orange-black-black (d) red-black-black
  11. 11.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  13. 13.🌈 In the resistor colour code, which number does grey stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) blue-red-red (b) blue-red-brown (c) red-blue-red (d) blue-red-orange
  15. 15.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does violet stand for?
  17. 17.🌈 A resistor has the colour bands white, black, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  19. 19.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the widest gap (d) the gold band
  20. 20.🌈 In the resistor colour code, which number does yellow stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67 Ω resistor? (a) violet-blue-black (b) blue-violet-brown (c) blue-violet-black (d) violet-violet-black
  22. 22.🌈 A resistor has the colour bands grey, brown, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands green, violet, black. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does white stand for?
  25. 25.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8300 Ω resistor? (a) grey-orange-orange (b) orange-grey-red (c) grey-orange-red (d) grey-orange-brown
  29. 29.🌈 In the resistor colour code, which number does red stand for?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13 Ω resistor? (a) orange-brown-black (b) brown-orange-brown (c) brown-orange-black (d) red-orange-black
  31. 31.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does green stand for?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) orange-red-black (b) red-orange-black (c) orange-orange-black (d) red-orange-brown
  37. 37.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands violet, red, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?

Answer key

  1. 34
  2. orange-white-orange
  3. 690
  4. 690
  5. 420
  6. 27
  7. 61
  8. 6
  9. 59000
  10. red-black-black
  11. 5
  12. 5 %
  13. 8
  14. blue-red-red
  15. 20
  16. 7
  17. 900
  18. 11
  19. the one nearest an end
  20. 4
  21. blue-violet-black
  22. 810
  23. 57
  24. 9
  25. 78
  26. 6100
  27. 9.7
  28. grey-orange-red
  29. 2
  30. brown-orange-black
  31. 2200
  32. 31
  33. 67
  34. 900
  35. 5
  36. red-orange-black
  37. 350
  38. 6.5
  39. 7200
  40. 15

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