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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 921 · 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 red stand for?
  2. 2.🌈 In the resistor colour code, which number does white stand for?
  3. 3.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) grey-black-brown (b) grey-black-black (c) white-black-black (d) white-grey-black
  5. 5.🌈 A resistor has the colour bands green, blue, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64000 Ω resistor? (a) yellow-blue-orange (b) blue-yellow-red (c) blue-yellow-yellow (d) blue-yellow-orange
  12. 12.🌈 A resistor has the colour bands violet, green, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands blue, grey, red. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19000 Ω resistor? (a) brown-white-orange (b) brown-white-yellow (c) brown-white-red (d) white-brown-orange
  16. 16.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6400 Ω resistor? (a) blue-yellow-orange (b) blue-yellow-brown (c) yellow-blue-red (d) blue-yellow-red
  18. 18.🌈 A resistor has the colour bands grey, grey, brown. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48000 Ω resistor? (a) yellow-grey-red (b) yellow-grey-orange (c) grey-yellow-orange (d) yellow-grey-yellow
  20. 20.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  21. 21.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3200 Ω resistor? (a) red-orange-red (b) orange-red-red (c) orange-red-orange (d) orange-red-brown
  23. 23.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does yellow stand for?
  26. 26.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 500 Ω resistor? (a) blue-green-brown (b) green-black-black (c) green-black-red (d) green-black-brown
  29. 29.🌈 A resistor has the colour bands brown, white, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 540 Ω resistor? (a) yellow-green-brown (b) green-yellow-brown (c) green-yellow-black (d) green-yellow-red
  31. 31.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands grey, blue, brown. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does orange stand for?
  34. 34.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) blue-brown-black (b) green-brown-brown (c) green-brown-black (d) brown-green-black
  36. 36.🌈 A resistor has the colour bands green, grey, brown. What is its value (in ohms)?
  37. 37.🌈 In the resistor colour code, which number does violet stand for?
  38. 38.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?

Answer key

  1. 2
  2. 9
  3. 53
  4. grey-black-black
  5. 560
  6. 650
  7. 92
  8. 360
  9. 16
  10. the one nearest an end
  11. blue-yellow-orange
  12. 750
  13. 6800
  14. 99
  15. brown-white-orange
  16. 5800
  17. blue-yellow-red
  18. 880
  19. yellow-grey-orange
  20. 34000
  21. 5 %
  22. orange-red-red
  23. 30
  24. 19
  25. 4
  26. 5000
  27. 2.2
  28. green-black-brown
  29. 19
  30. green-yellow-brown
  31. 7.8
  32. 860
  33. 3
  34. 760
  35. green-brown-black
  36. 580
  37. 7
  38. 11000
  39. 430
  40. 5100

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