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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 553 · 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 red, orange, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68000 Ω resistor? (a) grey-blue-orange (b) blue-grey-orange (c) blue-grey-red (d) blue-grey-yellow
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 25 % (d) 50 %
  6. 6.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does brown stand for?
  8. 8.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands white, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92000 Ω resistor? (a) white-red-yellow (b) red-white-orange (c) white-red-red (d) white-red-orange
  11. 11.🌈 In the resistor colour code, which number does yellow stand for?
  12. 12.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 570 Ω resistor? (a) green-violet-black (b) green-violet-brown (c) green-violet-red (d) violet-green-brown
  14. 14.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does green stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) brown-black-black (b) white-black-brown (c) white-black-black (d) brown-white-black
  18. 18.🌈 A resistor has the colour bands grey, green, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2700 Ω resistor? (a) violet-red-red (b) red-violet-red (c) red-violet-orange (d) red-violet-brown
  20. 20.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  21. 21.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands blue, blue, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands yellow, white, orange. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 710 Ω resistor? (a) violet-brown-red (b) violet-brown-brown (c) brown-violet-brown (d) violet-brown-black
  29. 29.🌈 A resistor has the colour bands white, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands green, grey, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands green, green, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 In the resistor colour code, which number does white stand for?
  34. 34.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) green-brown-brown (b) blue-brown-black (c) green-brown-black (d) brown-green-black
  36. 36.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14 Ω resistor? (a) brown-yellow-black (b) red-yellow-black (c) yellow-brown-black (d) brown-yellow-brown
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) white-yellow-brown (b) yellow-white-black (c) brown-yellow-black (d) white-yellow-black
  39. 39.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?

Answer key

  1. 23
  2. 8500
  3. 650
  4. blue-grey-orange
  5. 5 %
  6. 7.2
  7. 1
  8. 26000
  9. 980
  10. white-red-orange
  11. 4
  12. 4200
  13. green-violet-brown
  14. 78
  15. 110
  16. 5
  17. white-black-black
  18. 85
  19. red-violet-red
  20. the one nearest an end
  21. 4.4
  22. 6600
  23. 6.1
  24. 20
  25. 59
  26. 36
  27. 49000
  28. violet-brown-brown
  29. 930
  30. 58000
  31. 5500
  32. 120
  33. 9
  34. 6
  35. green-brown-black
  36. 25
  37. brown-yellow-black
  38. white-yellow-black
  39. 6100
  40. 89000

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