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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 16 · 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) 5 % (b) 0 % (c) 25 % (d) 50 %
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) brown-violet-brown (b) brown-violet-black (c) violet-brown-brown (d) brown-violet-red
  3. 3.🌈 In the resistor colour code, which number does brown stand for?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 720 Ω resistor? (a) red-violet-brown (b) violet-red-red (c) violet-red-brown (d) violet-red-black
  5. 5.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  6. 6.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  7. 7.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
  8. 8.🌈 In the resistor colour code, which number does black stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-orange-orange (b) orange-orange-brown (c) orange-yellow-red (d) orange-orange-red
  10. 10.🌈 In the resistor colour code, which number does green stand for?
  11. 11.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does blue stand for?
  13. 13.🌈 In the resistor colour code, which number does yellow stand for?
  14. 14.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-red (b) violet-red-brown (c) red-violet-brown (d) red-violet-black
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6600 Ω resistor? (a) blue-blue-red (b) blue-blue-orange (c) blue-blue-brown (d) blue-violet-red
  17. 17.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, grey, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands violet, yellow, brown. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands brown, green, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands green, white, orange. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does violet stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 850 Ω resistor? (a) grey-green-black (b) green-grey-brown (c) grey-green-red (d) grey-green-brown
  27. 27.🌈 A resistor has the colour bands brown, orange, orange. What is its value (in ohms)?
  28. 28.🌈 In the resistor colour code, which number does grey stand for?
  29. 29.🌈 A resistor has the colour bands grey, white, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands grey, yellow, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 In the resistor colour code, which number does red stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) white-orange-black (b) orange-white-brown (c) white-orange-brown (d) white-orange-red
  39. 39.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?

Answer key

  1. 5 %
  2. brown-violet-brown
  3. 1
  4. violet-red-brown
  5. 2100
  6. the one nearest an end
  7. 44
  8. 0
  9. orange-orange-red
  10. 5
  11. 170
  12. 6
  13. 4
  14. 500
  15. red-violet-brown
  16. blue-blue-red
  17. 9700
  18. 68000
  19. 680
  20. 740
  21. 200
  22. 9.1
  23. 150
  24. 59000
  25. 7
  26. grey-green-brown
  27. 13000
  28. 8
  29. 89
  30. 840
  31. 23
  32. 97
  33. 2200
  34. 82
  35. 9000
  36. 37
  37. 2
  38. white-orange-brown
  39. 23
  40. 83000

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