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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 179 · 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) 0 % (b) 5 % (c) 25 % (d) 50 %
  2. 2.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
  3. 3.🌈 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
  4. 4.🌈 In the resistor colour code, which number does red stand for?
  5. 5.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands green, green, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands violet, yellow, brown. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) violet-white-black (b) white-violet-black (c) violet-white-brown (d) grey-white-black
  13. 13.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) orange-red-black (b) red-orange-black (c) red-orange-brown (d) orange-orange-black
  15. 15.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands blue, green, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands blue, grey, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) green-red-black (b) red-yellow-black (c) yellow-red-black (d) yellow-red-brown
  19. 19.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) grey-white-brown (b) white-grey-red (c) white-grey-brown (d) white-grey-black
  22. 22.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does white stand for?
  26. 26.🌈 In the resistor colour code, which number does green stand for?
  27. 27.🌈 A resistor has the colour bands yellow, green, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 800 Ω resistor? (a) grey-black-red (b) grey-black-brown (c) grey-black-black (d) white-grey-brown
  30. 30.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 In the resistor colour code, which number does brown stand for?
  34. 34.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands red, grey, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands green, green, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) brown-grey-black (b) grey-brown-brown (c) grey-brown-black (d) white-brown-black
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-red-brown (b) brown-brown-brown (c) brown-brown-black (d) brown-brown-red

Answer key

  1. 5 %
  2. 310
  3. the one nearest an end
  4. 2
  5. 8.7
  6. 8500
  7. 55000
  8. 59
  9. 740
  10. 1500
  11. 5700
  12. violet-white-black
  13. 50
  14. red-orange-black
  15. 690
  16. 650
  17. 68
  18. yellow-red-black
  19. 1200
  20. 240
  21. white-grey-brown
  22. 60000
  23. 62
  24. 31000
  25. 9
  26. 5
  27. 4.5
  28. 71
  29. grey-black-brown
  30. 390
  31. 1.6
  32. 38
  33. 1
  34. 2600
  35. 5000
  36. 2800
  37. 5500
  38. 570
  39. grey-brown-black
  40. brown-brown-brown

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