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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 952 · 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.🌈 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
  2. 2.🌈 In the resistor colour code, which number does orange stand for?
  3. 3.🌈 In the resistor colour code, which number does red stand for?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3600 Ω resistor? (a) blue-orange-red (b) orange-blue-red (c) orange-blue-orange (d) orange-blue-brown
  5. 5.🌈 In the resistor colour code, which number does brown stand for?
  6. 6.🌈 A resistor has the colour bands white, orange, orange. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  10. 10.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) yellow-brown-brown (b) brown-yellow-red (c) brown-yellow-black (d) brown-yellow-brown
  14. 14.🌈 A resistor has the colour bands grey, blue, orange. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) yellow-red-red (b) yellow-red-black (c) yellow-red-brown (d) red-yellow-brown
  17. 17.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands orange, green, black. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32 Ω resistor? (a) yellow-red-black (b) red-orange-black (c) orange-red-black (d) orange-red-brown
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 540 Ω resistor? (a) green-yellow-red (b) yellow-green-brown (c) green-yellow-brown (d) green-yellow-black
  21. 21.🌈 In the resistor colour code, which number does grey stand for?
  22. 22.🌈 In the resistor colour code, which number does yellow stand for?
  23. 23.🌈 A resistor has the colour bands red, violet, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands white, green, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) blue-green-orange (b) green-black-red (c) green-black-orange (d) green-black-yellow
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24 Ω resistor? (a) red-yellow-black (b) orange-yellow-black (c) yellow-red-black (d) red-yellow-brown
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98000 Ω resistor? (a) grey-white-orange (b) white-grey-red (c) white-grey-orange (d) white-grey-yellow
  32. 32.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands grey, violet, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 In the resistor colour code, which number does white stand for?
  37. 37.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. the one nearest an end
  2. 3
  3. 2
  4. orange-blue-red
  5. 1
  6. 93000
  7. 5.5
  8. 88000
  9. 5 %
  10. 83000
  11. 760
  12. 710
  13. brown-yellow-brown
  14. 86000
  15. 100
  16. yellow-red-brown
  17. 31
  18. 35
  19. orange-red-black
  20. green-yellow-brown
  21. 8
  22. 4
  23. 270
  24. 470
  25. 34
  26. 99
  27. 95
  28. 8.6
  29. green-black-orange
  30. red-yellow-black
  31. white-grey-orange
  32. 40
  33. 21
  34. 4
  35. 87
  36. 9
  37. 8000
  38. 520
  39. 72
  40. 920

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