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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 349 · 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.🌈 In the resistor colour code, which number does brown stand for?
  2. 2.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  5. 5.🌈 In the resistor colour code, which number does orange stand for?
  6. 6.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands violet, green, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
  10. 10.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
  11. 11.🌈 In the resistor colour code, which number does black stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84000 Ω resistor? (a) grey-yellow-yellow (b) yellow-grey-orange (c) grey-yellow-orange (d) grey-yellow-red
  13. 13.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does red stand for?
  16. 16.🌈 A resistor has the colour bands blue, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9300 Ω resistor? (a) white-orange-red (b) white-orange-orange (c) white-orange-brown (d) orange-white-red
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4500 Ω resistor? (a) yellow-green-red (b) green-yellow-red (c) yellow-green-orange (d) yellow-green-brown
  19. 19.🌈 In the resistor colour code, which number does violet stand for?
  20. 20.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does yellow stand for?
  22. 22.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands brown, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands yellow, black, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands violet, grey, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 63000 Ω resistor? (a) blue-orange-yellow (b) blue-orange-orange (c) blue-orange-red (d) orange-blue-orange
  37. 37.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands white, violet, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 570 Ω resistor? (a) green-violet-red (b) violet-green-brown (c) green-violet-brown (d) green-violet-black
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-brown (b) red-grey-black (c) red-grey-red (d) grey-red-brown

Answer key

  1. 1
  2. 4.2
  3. 7.2
  4. 5 %
  5. 3
  6. 69
  7. 660
  8. 7.5
  9. 180
  10. the one nearest an end
  11. 0
  12. grey-yellow-orange
  13. 64000
  14. 1.4
  15. 2
  16. 610
  17. white-orange-red
  18. yellow-green-red
  19. 7
  20. 44
  21. 4
  22. 5
  23. 130
  24. 71
  25. 55
  26. 92
  27. 40
  28. 51
  29. 390
  30. 78000
  31. 40000
  32. 570
  33. 510
  34. 70
  35. 8.8
  36. blue-orange-orange
  37. 200
  38. 97
  39. green-violet-brown
  40. red-grey-brown

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