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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 911 · 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) any band (b) the gold band (c) the widest gap (d) the one nearest an end
  2. 2.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 In the resistor colour code, which number does violet stand for?
  4. 4.🌈 In the resistor colour code, which number does green stand for?
  5. 5.🌈 A resistor has the colour bands yellow, grey, orange. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does blue stand for?
  7. 7.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6100 Ω resistor? (a) blue-brown-orange (b) blue-brown-brown (c) blue-brown-red (d) brown-blue-red
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 370 Ω resistor? (a) orange-violet-black (b) orange-violet-brown (c) orange-violet-red (d) violet-orange-brown
  13. 13.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands brown, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  18. 18.🌈 In the resistor colour code, which number does brown stand for?
  19. 19.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  20. 20.🌈 In the resistor colour code, which number does yellow stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-yellow (c) red-orange-orange (d) red-orange-red
  22. 22.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does grey stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-brown-brown (b) brown-brown-red (c) brown-red-brown (d) brown-brown-black
  26. 26.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72000 Ω resistor? (a) violet-red-orange (b) red-violet-orange (c) violet-red-red (d) violet-red-yellow
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) brown-red-black (b) red-brown-black (c) orange-brown-black (d) red-brown-brown
  30. 30.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands orange, red, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83000 Ω resistor? (a) orange-grey-orange (b) grey-orange-red (c) grey-orange-yellow (d) grey-orange-orange
  33. 33.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 In the resistor colour code, which number does white stand for?
  35. 35.🌈 In the resistor colour code, which number does orange stand for?
  36. 36.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. 9.5
  3. 7
  4. 5
  5. 48000
  6. 6
  7. 720
  8. 77
  9. 6200
  10. 1.3
  11. blue-brown-red
  12. orange-violet-brown
  13. 22
  14. 12
  15. 620
  16. 140
  17. 71
  18. 1
  19. 5 %
  20. 4
  21. red-orange-orange
  22. 2600
  23. 730
  24. 8
  25. brown-brown-brown
  26. 600
  27. 5100
  28. violet-red-orange
  29. red-brown-black
  30. 5.2
  31. 32
  32. grey-orange-orange
  33. 15
  34. 9
  35. 3
  36. 84
  37. 450
  38. 2200
  39. 78
  40. 85

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