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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 198 · 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 violet, brown, black. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9800 Ω resistor? (a) white-grey-brown (b) white-grey-red (c) grey-white-red (d) white-grey-orange
  3. 3.🌈 A resistor has the colour bands white, green, brown. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands yellow, white, brown. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93000 Ω resistor? (a) orange-white-orange (b) white-orange-orange (c) white-orange-red (d) white-orange-yellow
  6. 6.🌈 In the resistor colour code, which number does white stand for?
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  8. 8.🌈 In the resistor colour code, which number does red stand for?
  9. 9.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does yellow stand for?
  12. 12.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 240 Ω resistor? (a) red-yellow-red (b) red-yellow-black (c) yellow-red-brown (d) red-yellow-brown
  14. 14.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) white-grey-red (b) white-grey-black (c) grey-white-brown (d) white-grey-brown
  17. 17.🌈 A resistor has the colour bands orange, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
  19. 19.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 97000 Ω resistor? (a) white-violet-red (b) white-violet-orange (c) white-violet-yellow (d) violet-white-orange
  21. 21.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76000 Ω resistor? (a) blue-violet-orange (b) violet-blue-yellow (c) violet-blue-red (d) violet-blue-orange
  23. 23.🌈 In the resistor colour code, which number does green stand for?
  24. 24.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands red, violet, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 890 Ω resistor? (a) grey-white-black (b) grey-white-red (c) grey-white-brown (d) white-grey-brown
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24 Ω resistor? (a) red-yellow-brown (b) orange-yellow-black (c) red-yellow-black (d) yellow-red-black
  30. 30.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5000 Ω resistor? (a) blue-green-red (b) green-black-orange (c) green-black-red (d) green-black-brown
  32. 32.🌈 In the resistor colour code, which number does grey stand for?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71 Ω resistor? (a) brown-violet-black (b) violet-brown-brown (c) violet-brown-black (d) grey-brown-black
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83 Ω resistor? (a) white-orange-black (b) grey-orange-black (c) grey-orange-brown (d) orange-grey-black
  35. 35.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 700 Ω resistor? (a) grey-violet-brown (b) violet-black-black (c) violet-black-red (d) violet-black-brown
  39. 39.🌈 A resistor has the colour bands blue, violet, red. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does brown stand for?

Answer key

  1. 71
  2. white-grey-red
  3. 950
  4. 490
  5. white-orange-orange
  6. 9
  7. 5 %
  8. 2
  9. 26000
  10. 3.9
  11. 4
  12. 10
  13. red-yellow-brown
  14. 5.8
  15. 450
  16. white-grey-brown
  17. 310
  18. the one nearest an end
  19. 1500
  20. white-violet-orange
  21. 5.4
  22. violet-blue-orange
  23. 5
  24. 23
  25. 2700
  26. 3.8
  27. 51
  28. grey-white-brown
  29. red-yellow-black
  30. 80000
  31. green-black-red
  32. 8
  33. violet-brown-black
  34. grey-orange-black
  35. 54000
  36. 56000
  37. 700
  38. violet-black-brown
  39. 6700
  40. 1

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