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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 768 · 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 colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) red-brown-brown (b) brown-red-red (c) brown-red-black (d) brown-red-brown
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  3. 3.🌈 In the resistor colour code, which number does orange stand for?
  4. 4.🌈 A resistor has the colour bands orange, green, black. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands blue, green, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  14. 14.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  15. 15.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does green stand for?
  17. 17.🌈 A resistor has the colour bands green, red, red. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 370 Ω resistor? (a) violet-orange-brown (b) orange-violet-brown (c) orange-violet-black (d) orange-violet-red
  19. 19.🌈 In the resistor colour code, which number does white stand for?
  20. 20.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does black stand for?
  22. 22.🌈 A resistor has the colour bands brown, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55000 Ω resistor? (a) green-green-orange (b) green-green-red (c) green-green-yellow (d) green-blue-orange
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) violet-brown-black (b) blue-brown-brown (c) blue-brown-black (d) brown-blue-black
  25. 25.🌈 In the resistor colour code, which number does blue stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) green-red-black (b) orange-green-black (c) red-green-brown (d) red-green-black
  27. 27.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands white, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33 Ω resistor? (a) orange-orange-brown (b) orange-yellow-black (c) orange-orange-black (d) yellow-orange-black
  31. 31.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does yellow stand for?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) violet-white-brown (b) grey-white-black (c) white-violet-black (d) violet-white-black
  34. 34.🌈 A resistor has the colour bands violet, black, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 In the resistor colour code, which number does brown stand for?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-yellow (b) orange-red-orange (c) red-black-red (d) red-black-orange
  37. 37.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does grey stand for?

Answer key

  1. brown-red-brown
  2. 5 %
  3. 3
  4. 35
  5. 230
  6. 9.9
  7. 50000
  8. 65
  9. 59
  10. 3.2
  11. 37
  12. 89
  13. 14
  14. the one nearest an end
  15. 710
  16. 5
  17. 5200
  18. orange-violet-brown
  19. 9
  20. 190
  21. 0
  22. 130
  23. green-green-orange
  24. blue-brown-black
  25. 6
  26. red-green-black
  27. 60
  28. 980
  29. 210
  30. orange-orange-black
  31. 39000
  32. 4
  33. violet-white-black
  34. 700
  35. 1
  36. red-black-orange
  37. 760
  38. 83
  39. 410
  40. 8

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