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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 135 · 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, violet, orange. What is its value (in ohms)?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 50 % (d) 0 %
  3. 3.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70000 Ω resistor? (a) violet-black-red (b) grey-violet-orange (c) violet-black-yellow (d) violet-black-orange
  5. 5.🌈 A resistor has the colour bands white, red, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands brown, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) green-brown-orange (b) green-brown-red (c) green-brown-yellow (d) brown-green-orange
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) violet-green-black (b) green-blue-black (c) blue-green-brown (d) blue-green-black
  11. 11.🌈 A resistor has the colour bands grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands brown, white, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands yellow, blue, red. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24 Ω resistor? (a) yellow-red-black (b) red-yellow-brown (c) red-yellow-black (d) orange-yellow-black
  17. 17.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54 Ω resistor? (a) yellow-green-black (b) green-yellow-brown (c) green-yellow-black (d) blue-yellow-black
  19. 19.🌈 In the resistor colour code, which number does red stand for?
  20. 20.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 In the resistor colour code, which number does yellow stand for?
  23. 23.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands green, grey, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8100 Ω resistor? (a) brown-grey-red (b) grey-brown-orange (c) grey-brown-red (d) grey-brown-brown
  26. 26.🌈 A resistor has the colour bands grey, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 890 Ω resistor? (a) grey-white-red (b) grey-white-brown (c) white-grey-brown (d) grey-white-black
  30. 30.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does orange stand for?
  33. 33.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  39. 39.🌈 In the resistor colour code, which number does violet stand for?
  40. 40.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?

Answer key

  1. 47000
  2. 5 %
  3. 7500
  4. violet-black-orange
  5. 92000
  6. 140
  7. 6.8
  8. the one nearest an end
  9. green-brown-orange
  10. blue-green-black
  11. 800
  12. 980
  13. 9700
  14. 1.9
  15. 4600
  16. red-yellow-black
  17. 72
  18. green-yellow-black
  19. 2
  20. 56
  21. 1
  22. 4
  23. 9.5
  24. 58
  25. grey-brown-red
  26. 880
  27. 80000
  28. 7.1
  29. grey-white-brown
  30. 8.1
  31. 5100
  32. 3
  33. 600
  34. 220
  35. 730
  36. 14
  37. 670
  38. 100
  39. 7
  40. 98000

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