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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 975 · 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 gold band (b) the widest gap (c) the one nearest an end (d) any band
  2. 2.🌈 In the resistor colour code, which number does yellow stand for?
  3. 3.🌈 A resistor has the colour bands blue, green, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8200 Ω resistor? (a) red-grey-red (b) grey-red-brown (c) grey-red-red (d) grey-red-orange
  5. 5.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) violet-red-brown (b) red-violet-black (c) violet-red-black (d) grey-red-black
  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, white, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does red stand for?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18000 Ω resistor? (a) brown-grey-red (b) brown-grey-orange (c) brown-grey-yellow (d) grey-brown-orange
  12. 12.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands yellow, grey, brown. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does black stand for?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6700 Ω resistor? (a) blue-violet-orange (b) blue-violet-red (c) violet-blue-red (d) blue-violet-brown
  16. 16.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-black-black (b) violet-black-brown (c) grey-violet-black (d) violet-black-black
  18. 18.🌈 In the resistor colour code, which number does violet stand for?
  19. 19.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands violet, white, red. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3900 Ω resistor? (a) orange-white-orange (b) orange-white-red (c) orange-white-brown (d) white-orange-red
  22. 22.🌈 A resistor has the colour bands green, green, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) blue-brown-black (b) red-blue-black (c) brown-blue-black (d) brown-blue-brown
  25. 25.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 97 Ω resistor? (a) white-violet-black (b) brown-violet-black (c) violet-white-black (d) white-violet-brown
  27. 27.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-brown (b) green-red-red (c) red-green-red (d) red-green-orange
  29. 29.🌈 In the resistor colour code, which number does blue stand for?
  30. 30.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) green-brown-yellow (b) green-brown-orange (c) brown-green-orange (d) green-brown-red
  34. 34.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 330 Ω resistor? (a) orange-yellow-brown (b) orange-orange-red (c) orange-orange-black (d) orange-orange-brown
  39. 39.🌈 A resistor has the colour bands white, black, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. 4
  3. 65
  4. grey-red-red
  5. 76
  6. violet-red-black
  7. 720
  8. 7.9
  9. 2
  10. 5 %
  11. brown-grey-orange
  12. 100
  13. 480
  14. 0
  15. blue-violet-red
  16. 10
  17. violet-black-black
  18. 7
  19. 60
  20. 7900
  21. orange-white-red
  22. 55
  23. 60000
  24. brown-blue-black
  25. 56
  26. white-violet-black
  27. 1.5
  28. red-green-red
  29. 6
  30. 14
  31. 4.4
  32. 37
  33. green-brown-orange
  34. 840
  35. 22
  36. 5.8
  37. 16000
  38. orange-orange-brown
  39. 900
  40. 14

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