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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 589 · 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) 25 % (b) 0 % (c) 5 % (d) 50 %
  2. 2.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does black stand for?
  6. 6.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does yellow stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) orange-white-black (b) white-orange-black (c) white-orange-brown (d) brown-orange-black
  9. 9.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does brown stand for?
  11. 11.🌈 In the resistor colour code, which number does red stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) orange-black-orange (b) orange-black-yellow (c) yellow-orange-orange (d) orange-black-red
  13. 13.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
  15. 15.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands blue, yellow, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 680 Ω resistor? (a) grey-blue-brown (b) blue-grey-red (c) blue-grey-brown (d) blue-grey-black
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44000 Ω resistor? (a) yellow-yellow-yellow (b) yellow-yellow-red (c) yellow-green-orange (d) yellow-yellow-orange
  19. 19.🌈 A resistor has the colour bands violet, green, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands yellow, white, orange. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 63 Ω resistor? (a) blue-orange-black (b) blue-orange-brown (c) violet-orange-black (d) orange-blue-black
  24. 24.🌈 A resistor has the colour bands white, grey, red. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59000 Ω resistor? (a) green-white-yellow (b) green-white-orange (c) green-white-red (d) white-green-orange
  26. 26.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-yellow-brown (b) green-yellow-black (c) yellow-green-black (d) yellow-yellow-black
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96 Ω resistor? (a) white-blue-brown (b) blue-white-black (c) brown-blue-black (d) white-blue-black
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57000 Ω resistor? (a) green-violet-orange (b) green-violet-red (c) green-violet-yellow (d) violet-green-orange
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) brown-red-black (b) orange-brown-black (c) red-brown-brown (d) red-brown-black
  31. 31.🌈 A resistor has the colour bands grey, orange, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does green stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) brown-green-orange (b) green-brown-yellow (c) green-brown-red (d) green-brown-orange
  35. 35.🌈 A resistor has the colour bands green, green, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands yellow, white, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands yellow, black, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 5 %
  2. 180
  3. 64
  4. 3000
  5. 0
  6. 91
  7. 4
  8. white-orange-black
  9. 620
  10. 1
  11. 2
  12. orange-black-orange
  13. 90
  14. the one nearest an end
  15. 92
  16. 6.4
  17. blue-grey-brown
  18. yellow-yellow-orange
  19. 75
  20. 4.1
  21. 24
  22. 49000
  23. blue-orange-black
  24. 9800
  25. green-white-orange
  26. 43
  27. yellow-yellow-black
  28. white-blue-black
  29. green-violet-orange
  30. red-brown-black
  31. 8300
  32. 85000
  33. 5
  34. green-brown-orange
  35. 55000
  36. 830
  37. 490
  38. 4700
  39. 4000
  40. 42

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