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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 335 · 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.

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  1. 1.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88 Ω resistor? (a) white-grey-black (b) grey-white-black (c) grey-grey-black (d) grey-grey-brown
  4. 4.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does orange stand for?
  6. 6.🌈 A resistor has the colour bands violet, blue, brown. What is its value (in ohms)?
  7. 7.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
  8. 8.🌈 A resistor has the colour bands blue, blue, brown. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 350 Ω resistor? (a) orange-green-red (b) orange-green-brown (c) orange-green-black (d) green-orange-brown
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9800 Ω resistor? (a) white-grey-orange (b) grey-white-red (c) white-grey-brown (d) white-grey-red
  11. 11.🌈 In the resistor colour code, which number does black stand for?
  12. 12.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  13. 13.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does blue stand for?
  15. 15.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4100 Ω resistor? (a) yellow-brown-orange (b) yellow-brown-brown (c) yellow-brown-red (d) brown-yellow-red
  18. 18.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40000 Ω resistor? (a) green-yellow-orange (b) yellow-black-red (c) yellow-black-orange (d) yellow-black-yellow
  22. 22.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90000 Ω resistor? (a) white-black-red (b) white-black-orange (c) white-black-yellow (d) brown-white-orange
  24. 24.🌈 A resistor has the colour bands grey, blue, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5500 Ω resistor? (a) green-blue-red (b) green-green-red (c) green-green-orange (d) green-green-brown
  28. 28.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands green, red, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands green, violet, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands blue, green, black. What is its value (in ohms)?
  32. 32.🌈 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
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7600 Ω resistor? (a) violet-blue-orange (b) blue-violet-red (c) violet-blue-red (d) violet-blue-brown
  34. 34.🌈 In the resistor colour code, which number does white stand for?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 600 Ω resistor? (a) blue-black-red (b) blue-black-black (c) violet-blue-brown (d) blue-black-brown
  36. 36.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 In the resistor colour code, which number does green stand for?
  38. 38.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands grey, orange, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?

Answer key

  1. 320
  2. 1.6
  3. grey-grey-black
  4. 16
  5. 3
  6. 760
  7. the one nearest an end
  8. 660
  9. orange-green-brown
  10. white-grey-red
  11. 0
  12. 5 %
  13. 7100
  14. 6
  15. 6300
  16. 19
  17. yellow-brown-red
  18. 260
  19. 9
  20. 83
  21. yellow-black-orange
  22. 1
  23. white-black-orange
  24. 860
  25. 91000
  26. 14000
  27. green-green-red
  28. 38
  29. 520
  30. 57000
  31. 65
  32. blue-orange-orange
  33. violet-blue-red
  34. 9
  35. blue-black-brown
  36. 4
  37. 5
  38. 66
  39. 830
  40. 32

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