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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 809 · 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) any band (c) the gold band (d) the widest gap
  2. 2.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) brown-white-brown (b) white-brown-black (c) red-white-black (d) brown-white-black
  6. 6.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands orange, white, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands blue, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 50 % (d) 25 %
  10. 10.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does violet stand for?
  12. 12.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) orange-violet-yellow (b) orange-violet-red (c) orange-violet-orange (d) violet-orange-orange
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) yellow-orange-red (b) orange-black-red (c) orange-black-orange (d) orange-black-brown
  17. 17.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands white, orange, black. What is its value (in ohms)?
  19. 19.🌈 In the resistor colour code, which number does blue stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1300 Ω resistor? (a) orange-brown-red (b) brown-orange-red (c) brown-orange-brown (d) brown-orange-orange
  21. 21.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands white, brown, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6800 Ω resistor? (a) grey-blue-red (b) blue-grey-orange (c) blue-grey-red (d) blue-grey-brown
  27. 27.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 In the resistor colour code, which number does brown stand for?
  29. 29.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  35. 35.🌈 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
  36. 36.🌈 In the resistor colour code, which number does black stand for?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) violet-orange-yellow (b) violet-orange-orange (c) violet-orange-red (d) orange-violet-orange
  38. 38.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 970 Ω resistor? (a) white-violet-red (b) white-violet-brown (c) violet-white-brown (d) white-violet-black

Answer key

  1. the one nearest an end
  2. 2200
  3. 99
  4. 8.5
  5. brown-white-black
  6. 6200
  7. 39
  8. 630
  9. 5 %
  10. 3.8
  11. 7
  12. 13
  13. 5.5
  14. 820
  15. orange-violet-orange
  16. orange-black-red
  17. 10
  18. 93
  19. 6
  20. brown-orange-red
  21. 360
  22. 740
  23. 91
  24. 39
  25. 2400
  26. blue-grey-red
  27. 410
  28. 1
  29. 7.8
  30. 11000
  31. 9.8
  32. 6.5
  33. 99000
  34. 7100
  35. brown-black-brown
  36. 0
  37. violet-orange-orange
  38. 500
  39. 1700
  40. white-violet-brown

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