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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 622 · 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 brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands grey, red, black. What is its value (in ohms)?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  4. 4.🌈 In the resistor colour code, which number does grey stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7300 Ω resistor? (a) violet-orange-red (b) violet-orange-brown (c) violet-orange-orange (d) orange-violet-red
  6. 6.🌈 In the resistor colour code, which number does violet stand for?
  7. 7.🌈 A resistor has the colour bands yellow, red, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands grey, yellow, brown. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 700 Ω resistor? (a) violet-black-red (b) violet-black-black (c) violet-black-brown (d) grey-violet-brown
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 750 Ω resistor? (a) green-violet-brown (b) violet-green-brown (c) violet-green-red (d) violet-green-black
  11. 11.🌈 In the resistor colour code, which number does black stand for?
  12. 12.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  16. 16.🌈 In the resistor colour code, which number does green stand for?
  17. 17.🌈 In the resistor colour code, which number does brown stand for?
  18. 18.🌈 A resistor has the colour bands white, blue, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands yellow, black, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) orange-orange-black (b) red-orange-black (c) red-orange-brown (d) orange-red-black
  24. 24.🌈 A resistor has the colour bands blue, grey, red. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) grey-blue-black (b) blue-violet-black (c) violet-blue-black (d) violet-blue-brown
  26. 26.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) grey-orange-black (b) violet-orange-brown (c) violet-orange-black (d) orange-violet-black
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) brown-yellow-black (b) yellow-brown-brown (c) yellow-brown-black (d) green-brown-black
  30. 30.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands violet, black, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands yellow, green, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 800 Ω resistor? (a) grey-black-black (b) grey-black-brown (c) grey-black-red (d) white-grey-brown
  37. 37.🌈 In the resistor colour code, which number does orange stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 990 Ω resistor? (a) white-white-brown (b) white-black-brown (c) white-white-red (d) white-white-black
  39. 39.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does white stand for?

Answer key

  1. 18
  2. 82
  3. 5 %
  4. 8
  5. violet-orange-red
  6. 7
  7. 42
  8. 840
  9. violet-black-brown
  10. violet-green-brown
  11. 0
  12. 37
  13. 60000
  14. 9.5
  15. the one nearest an end
  16. 5
  17. 1
  18. 96
  19. 40
  20. 41000
  21. 70
  22. 71000
  23. red-orange-black
  24. 6800
  25. violet-blue-black
  26. 1.4
  27. 17
  28. violet-orange-black
  29. yellow-brown-black
  30. 500
  31. 700
  32. 55
  33. 25
  34. 45
  35. 84
  36. grey-black-brown
  37. 3
  38. white-white-brown
  39. 25
  40. 9

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