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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 997 · 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 brown stand for?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  3. 3.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) blue-brown-brown (b) blue-brown-black (c) brown-blue-black (d) violet-brown-black
  5. 5.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) any band (d) the widest gap
  6. 6.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does white stand for?
  10. 10.🌈 A resistor has the colour bands blue, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) white-grey-brown (b) grey-white-black (c) brown-grey-black (d) white-grey-black
  13. 13.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does black stand for?
  15. 15.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) brown-black-brown (b) brown-black-red (c) red-brown-red (d) brown-black-orange
  18. 18.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) grey-green-brown (b) white-green-black (c) grey-green-black (d) green-grey-black
  20. 20.🌈 In the resistor colour code, which number does violet stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 350 Ω resistor? (a) orange-green-brown (b) orange-green-black (c) orange-green-red (d) green-orange-brown
  22. 22.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands white, blue, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) grey-white-black (b) violet-white-brown (c) white-violet-black (d) violet-white-black
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-brown-brown (b) brown-red-red (c) brown-brown-red (d) brown-brown-orange
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) yellow-brown-orange (b) yellow-brown-red (c) yellow-brown-yellow (d) brown-yellow-orange
  28. 28.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands yellow, brown, red. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does green stand for?
  32. 32.🌈 A resistor has the colour bands orange, white, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands brown, white, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands green, blue, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands orange, grey, red. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33 Ω resistor? (a) orange-yellow-black (b) orange-orange-brown (c) yellow-orange-black (d) orange-orange-black
  37. 37.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands violet, blue, orange. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7600 Ω resistor? (a) violet-blue-brown (b) violet-blue-red (c) blue-violet-red (d) violet-blue-orange
  40. 40.🌈 In the resistor colour code, which number does red stand for?

Answer key

  1. 1
  2. 5 %
  3. 130
  4. blue-brown-black
  5. the one nearest an end
  6. 520
  7. 3.1
  8. 83000
  9. 9
  10. 630
  11. 6.8
  12. white-grey-black
  13. 590
  14. 0
  15. 5
  16. 230
  17. brown-black-red
  18. 90
  19. grey-green-black
  20. 7
  21. orange-green-brown
  22. 300
  23. 9600
  24. 140
  25. violet-white-black
  26. brown-brown-red
  27. yellow-brown-orange
  28. 670
  29. 450
  30. 4100
  31. 5
  32. 39
  33. 19000
  34. 5.6
  35. 3800
  36. orange-orange-black
  37. 2500
  38. 76000
  39. violet-blue-red
  40. 2

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