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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 357 · 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 white stand for?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7400 Ω resistor? (a) violet-yellow-brown (b) violet-yellow-orange (c) violet-yellow-red (d) yellow-violet-red
  4. 4.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does brown stand for?
  7. 7.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
  8. 8.🌈 In the resistor colour code, which number does red stand for?
  9. 9.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does green stand for?
  11. 11.🌈 In the resistor colour code, which number does black stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 450 Ω resistor? (a) yellow-green-black (b) yellow-green-brown (c) green-yellow-brown (d) yellow-green-red
  13. 13.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 370 Ω resistor? (a) orange-violet-black (b) orange-violet-brown (c) orange-violet-red (d) violet-orange-brown
  15. 15.🌈 In the resistor colour code, which number does blue stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5600 Ω resistor? (a) green-blue-red (b) green-blue-brown (c) green-blue-orange (d) blue-green-red
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 100 Ω resistor? (a) brown-black-black (b) brown-black-brown (c) brown-black-red (d) red-brown-brown
  18. 18.🌈 A resistor has the colour bands violet, white, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 470 Ω resistor? (a) yellow-violet-red (b) yellow-violet-black (c) yellow-violet-brown (d) violet-yellow-brown
  22. 22.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands orange, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands yellow, red, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands brown, orange, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands white, orange, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does violet stand for?
  32. 32.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands violet, grey, orange. What is its value (in ohms)?
  35. 35.🌈 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
  36. 36.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands white, blue, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands grey, green, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?

Answer key

  1. 9
  2. 5 %
  3. violet-yellow-red
  4. 200
  5. 22
  6. 1
  7. 53000
  8. 2
  9. 71000
  10. 5
  11. 0
  12. yellow-green-brown
  13. 5.9
  14. orange-violet-brown
  15. 6
  16. green-blue-red
  17. brown-black-brown
  18. 790
  19. 71
  20. 26
  21. yellow-violet-brown
  22. 96
  23. 1400
  24. 310
  25. 800
  26. 690
  27. 7
  28. 420
  29. 1300
  30. 9.3
  31. 7
  32. 820
  33. 9
  34. 78000
  35. the one nearest an end
  36. 60000
  37. 1.2
  38. 96
  39. 850
  40. 980

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