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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 593 · 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 grey stand for?
  2. 2.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands orange, black, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 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
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  7. 7.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands violet, white, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands white, blue, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands yellow, grey, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3200 Ω resistor? (a) orange-red-red (b) orange-red-brown (c) orange-red-orange (d) red-orange-red
  20. 20.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 In the resistor colour code, which number does violet stand for?
  24. 24.🌈 A resistor has the colour bands violet, blue, orange. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) grey-green-brown (b) green-grey-red (c) green-grey-brown (d) green-grey-black
  26. 26.🌈 In the resistor colour code, which number does blue stand for?
  27. 27.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  28. 28.🌈 In the resistor colour code, which number does black stand for?
  29. 29.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49 Ω resistor? (a) yellow-white-black (b) white-yellow-black (c) yellow-white-brown (d) green-white-black
  32. 32.🌈 A resistor has the colour bands white, violet, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does red stand for?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) red-grey-orange (b) red-grey-brown (c) grey-red-red (d) red-grey-red
  37. 37.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) grey-blue-black (b) violet-blue-black (c) violet-blue-brown (d) blue-violet-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) red-green-black (b) orange-green-black (c) green-red-black (d) red-green-brown
  40. 40.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 8
  2. 6.3
  3. 39000
  4. 30
  5. the one nearest an end
  6. 5 %
  7. 250
  8. 79
  9. 610
  10. 780
  11. 600
  12. 22
  13. 160
  14. 92
  15. 960
  16. 96000
  17. 48
  18. 8500
  19. orange-red-red
  20. 53
  21. 970
  22. 2.2
  23. 7
  24. 76000
  25. green-grey-brown
  26. 6
  27. 33
  28. 0
  29. 890
  30. 28
  31. yellow-white-black
  32. 97000
  33. 98000
  34. 100
  35. 2
  36. red-grey-red
  37. 51
  38. violet-blue-black
  39. red-green-black
  40. 26

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