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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 408 · 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 widest gap (b) the gold band (c) the one nearest an end (d) any band
  2. 2.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 5 % (d) 0 %
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) grey-green-orange (b) grey-green-red (c) grey-green-yellow (d) green-grey-orange
  7. 7.🌈 In the resistor colour code, which number does brown stand for?
  8. 8.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands white, green, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13 Ω resistor? (a) orange-brown-black (b) brown-orange-black (c) red-orange-black (d) brown-orange-brown
  23. 23.🌈 In the resistor colour code, which number does green stand for?
  24. 24.🌈 A resistor has the colour bands brown, white, red. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, white, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands blue, green, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does black stand for?
  28. 28.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does blue stand for?
  35. 35.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does yellow stand for?
  37. 37.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9300 Ω resistor? (a) white-orange-orange (b) orange-white-red (c) white-orange-red (d) white-orange-brown
  39. 39.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does white stand for?

Answer key

  1. the one nearest an end
  2. 200
  3. 9.8
  4. 1.2
  5. 5 %
  6. grey-green-orange
  7. 1
  8. 20
  9. 970
  10. 580
  11. 2.6
  12. 2.4
  13. 9.9
  14. 36
  15. 18
  16. 2.8
  17. 9500
  18. 32000
  19. 71000
  20. 6100
  21. 1200
  22. brown-orange-black
  23. 5
  24. 1900
  25. 59
  26. 650
  27. 0
  28. 4.4
  29. 220
  30. 11
  31. 16
  32. 2100
  33. 16
  34. 6
  35. 430
  36. 4
  37. 60
  38. white-orange-red
  39. 1.7
  40. 9

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