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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 654 · 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 gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89 Ω resistor? (a) white-grey-black (b) white-white-black (c) grey-white-brown (d) grey-white-black
  3. 3.🌈 In the resistor colour code, which number does black stand for?
  4. 4.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands grey, grey, brown. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4900 Ω resistor? (a) yellow-white-brown (b) yellow-white-orange (c) white-yellow-red (d) yellow-white-red
  7. 7.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  8. 8.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
  9. 9.🌈 A resistor has the colour bands violet, green, orange. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 350 Ω resistor? (a) orange-green-red (b) orange-green-black (c) green-orange-brown (d) orange-green-brown
  13. 13.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands green, green, brown. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does white stand for?
  17. 17.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 In the resistor colour code, which number does violet stand for?
  20. 20.🌈 A resistor has the colour bands white, violet, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) brown-orange-black (b) yellow-brown-black (c) orange-brown-brown (d) orange-brown-black
  23. 23.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands green, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 In the resistor colour code, which number does brown stand for?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) violet-blue-red (b) blue-black-red (c) blue-black-brown (d) blue-black-orange
  30. 30.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) green-black-orange (b) green-black-yellow (c) green-black-red (d) blue-green-orange
  33. 33.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) grey-green-brown (b) green-grey-brown (c) green-grey-red (d) green-grey-black
  35. 35.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77000 Ω resistor? (a) violet-violet-red (b) violet-violet-orange (c) violet-violet-yellow (d) violet-grey-orange
  37. 37.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 In the resistor colour code, which number does blue stand for?
  40. 40.🌈 A resistor has the colour bands brown, blue, brown. What is its value (in ohms)?

Answer key

  1. 5 %
  2. grey-white-black
  3. 0
  4. 85000
  5. 880
  6. yellow-white-red
  7. 96
  8. the one nearest an end
  9. 75000
  10. 180
  11. 25000
  12. orange-green-brown
  13. 1.8
  14. 1700
  15. 550
  16. 9
  17. 9.8
  18. 7.9
  19. 7
  20. 97
  21. 280
  22. orange-brown-black
  23. 720
  24. 54
  25. 78
  26. 50000
  27. 2.6
  28. 1
  29. blue-black-red
  30. 8.5
  31. 8200
  32. green-black-orange
  33. 90
  34. green-grey-brown
  35. 82
  36. violet-violet-orange
  37. 7.7
  38. 29
  39. 6
  40. 160

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