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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 295 · 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.🌈 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
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  3. 3.🌈 In the resistor colour code, which number does red stand for?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 160 Ω resistor? (a) blue-brown-brown (b) brown-blue-black (c) brown-blue-red (d) brown-blue-brown
  5. 5.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does black stand for?
  7. 7.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands grey, brown, brown. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 670 Ω resistor? (a) blue-violet-red (b) blue-violet-black (c) blue-violet-brown (d) violet-blue-brown
  10. 10.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands violet, green, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands green, brown, orange. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4200 Ω resistor? (a) yellow-red-orange (b) red-yellow-red (c) yellow-red-red (d) yellow-red-brown
  15. 15.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) brown-white-red (b) brown-white-brown (c) white-brown-brown (d) brown-white-black
  17. 17.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands blue, yellow, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does orange stand for?
  25. 25.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) red-grey-orange (b) red-grey-yellow (c) red-grey-red (d) grey-red-orange
  27. 27.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32000 Ω resistor? (a) orange-red-orange (b) orange-red-yellow (c) orange-red-red (d) red-orange-orange
  30. 30.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 In the resistor colour code, which number does grey stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) green-black-brown (b) blue-green-black (c) blue-black-black (d) green-black-black
  35. 35.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) orange-red-black (b) red-orange-black (c) orange-orange-black (d) red-orange-brown
  39. 39.🌈 In the resistor colour code, which number does green stand for?
  40. 40.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. 5 %
  3. 2
  4. brown-blue-brown
  5. 2200
  6. 0
  7. 690
  8. 810
  9. blue-violet-brown
  10. 680
  11. 35000
  12. 75000
  13. 51000
  14. yellow-red-red
  15. 8200
  16. brown-white-brown
  17. 190
  18. 620
  19. 5000
  20. 40
  21. 310
  22. 6.4
  23. 5
  24. 3
  25. 81
  26. red-grey-orange
  27. 76
  28. 78
  29. orange-red-orange
  30. 5.8
  31. 23
  32. 5.4
  33. 8
  34. green-black-black
  35. 620
  36. 6
  37. 510
  38. red-orange-black
  39. 5
  40. 11000

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