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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 132 · 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 resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does grey stand for?
  4. 4.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does yellow stand for?
  6. 6.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does orange stand for?
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 25 % (d) 0 %
  9. 9.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) orange-black-brown (b) yellow-orange-black (c) orange-black-black (d) yellow-black-black
  11. 11.🌈 In the resistor colour code, which number does red stand for?
  12. 12.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) any band (d) the widest gap
  13. 13.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands white, green, brown. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does brown stand for?
  18. 18.🌈 In the resistor colour code, which number does violet stand for?
  19. 19.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 710 Ω resistor? (a) brown-violet-brown (b) violet-brown-black (c) violet-brown-brown (d) violet-brown-red
  21. 21.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) brown-black-yellow (b) red-brown-orange (c) brown-black-red (d) brown-black-orange
  23. 23.🌈 In the resistor colour code, which number does blue stand for?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) violet-orange-yellow (b) violet-orange-red (c) violet-orange-orange (d) orange-violet-orange
  25. 25.🌈 A resistor has the colour bands blue, red, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 940 Ω resistor? (a) yellow-white-brown (b) white-yellow-brown (c) white-yellow-black (d) white-yellow-red
  27. 27.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands green, red, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13000 Ω resistor? (a) brown-orange-red (b) brown-orange-orange (c) orange-brown-orange (d) brown-orange-yellow
  32. 32.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 In the resistor colour code, which number does white stand for?
  34. 34.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3500 Ω resistor? (a) orange-green-brown (b) orange-green-orange (c) orange-green-red (d) green-orange-red
  40. 40.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 45000
  2. 29
  3. 8
  4. 7000
  5. 4
  6. 1700
  7. 3
  8. 5 %
  9. 7.7
  10. orange-black-black
  11. 2
  12. the one nearest an end
  13. 80
  14. 100
  15. 780
  16. 950
  17. 1
  18. 7
  19. 5.9
  20. violet-brown-brown
  21. 70
  22. brown-black-orange
  23. 6
  24. violet-orange-orange
  25. 6.2
  26. white-yellow-brown
  27. 26
  28. 89000
  29. 13
  30. 52
  31. brown-orange-orange
  32. 1
  33. 9
  34. 2400
  35. 20
  36. 13
  37. 86
  38. 32
  39. orange-green-red
  40. 7.2

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