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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 361 · 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.🌈 In the resistor colour code, which number does yellow stand for?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 25 % (d) 0 %
  3. 3.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) blue-red-black (b) blue-red-brown (c) red-blue-brown (d) blue-red-red
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 610 Ω resistor? (a) blue-brown-red (b) blue-brown-brown (c) brown-blue-brown (d) blue-brown-black
  8. 8.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  9. 9.🌈 In the resistor colour code, which number does grey stand for?
  10. 10.🌈 In the resistor colour code, which number does orange stand for?
  11. 11.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands white, orange, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does brown stand for?
  16. 16.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands blue, green, orange. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does green stand for?
  21. 21.🌈 In the resistor colour code, which number does black stand for?
  22. 22.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands yellow, green, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9500 Ω resistor? (a) white-green-red (b) green-white-red (c) white-green-orange (d) white-green-brown
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) green-blue-black (b) blue-green-brown (c) violet-green-black (d) blue-green-black
  28. 28.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 In the resistor colour code, which number does white stand for?
  35. 35.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands yellow, orange, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53 Ω resistor? (a) orange-green-black (b) green-orange-black (c) blue-orange-black (d) green-orange-brown
  38. 38.🌈 A resistor has the colour bands violet, white, black. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88000 Ω resistor? (a) grey-grey-red (b) grey-grey-orange (c) grey-white-orange (d) grey-grey-yellow
  40. 40.🌈 A resistor has the colour bands white, red, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 4
  2. 5 %
  3. 1200
  4. 1800
  5. 50
  6. blue-red-brown
  7. blue-brown-brown
  8. the one nearest an end
  9. 8
  10. 3
  11. 160
  12. 9.3
  13. 36
  14. 220
  15. 1
  16. 46
  17. 210
  18. 2100
  19. 65000
  20. 5
  21. 0
  22. 7800
  23. 4.5
  24. 44
  25. 63
  26. white-green-red
  27. blue-green-black
  28. 78
  29. 62
  30. 400
  31. 53000
  32. 920
  33. 250
  34. 9
  35. 8100
  36. 4.3
  37. green-orange-black
  38. 79
  39. grey-grey-orange
  40. 92

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