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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 572 · 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) 50 % (b) 0 % (c) 25 % (d) 5 %
  2. 2.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26 Ω resistor? (a) orange-blue-black (b) red-blue-brown (c) blue-red-black (d) red-blue-black
  4. 4.🌈 In the resistor colour code, which number does black stand for?
  5. 5.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) orange-brown-brown (b) brown-orange-red (c) orange-brown-orange (d) orange-brown-red
  7. 7.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  8. 8.🌈 In the resistor colour code, which number does blue stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 850 Ω resistor? (a) grey-green-brown (b) grey-green-red (c) grey-green-black (d) green-grey-brown
  10. 10.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
  11. 11.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands green, green, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does brown stand for?
  15. 15.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does orange stand for?
  17. 17.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 In the resistor colour code, which number does grey stand for?
  21. 21.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32000 Ω resistor? (a) orange-red-orange (b) orange-red-yellow (c) red-orange-orange (d) orange-red-red
  25. 25.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands green, grey, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 970 Ω resistor? (a) violet-white-brown (b) white-violet-red (c) white-violet-brown (d) white-violet-black
  30. 30.🌈 In the resistor colour code, which number does yellow stand for?
  31. 31.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does violet stand for?
  33. 33.🌈 A resistor has the colour bands blue, violet, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands green, blue, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands blue, red, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) violet-black-black (b) grey-black-black (c) violet-black-brown (d) grey-violet-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 960 Ω resistor? (a) white-blue-red (b) white-blue-brown (c) white-blue-black (d) blue-white-brown
  40. 40.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 5 %
  2. 180
  3. red-blue-black
  4. 0
  5. 1800
  6. orange-brown-red
  7. 500
  8. 6
  9. grey-green-brown
  10. the one nearest an end
  11. 900
  12. 550
  13. 22
  14. 1
  15. 420
  16. 3
  17. 200
  18. 350
  19. 8.6
  20. 8
  21. 77
  22. 6200
  23. 720
  24. orange-red-orange
  25. 2000
  26. 58000
  27. 8000
  28. 1500
  29. white-violet-brown
  30. 4
  31. 8400
  32. 7
  33. 67000
  34. 49
  35. 410
  36. 560
  37. 6.2
  38. violet-black-black
  39. white-blue-brown
  40. 1.7

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