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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 923 · 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 green stand for?
  2. 2.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 810 Ω resistor? (a) brown-grey-brown (b) grey-brown-red (c) grey-brown-black (d) grey-brown-brown
  4. 4.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
  6. 6.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) any band (d) the widest gap
  7. 7.🌈 A resistor has the colour bands white, green, red. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) red-violet-black (b) grey-red-black (c) violet-red-black (d) violet-red-brown
  9. 9.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93000 Ω resistor? (a) white-orange-red (b) orange-white-orange (c) white-orange-yellow (d) white-orange-orange
  11. 11.🌈 In the resistor colour code, which number does grey stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) brown-yellow-black (b) yellow-brown-brown (c) brown-yellow-brown (d) brown-yellow-red
  13. 13.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 50 % (d) 25 %
  14. 14.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does orange stand for?
  16. 16.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) white-green-black (b) grey-green-black (c) green-grey-black (d) grey-green-brown
  18. 18.🌈 In the resistor colour code, which number does blue stand for?
  19. 19.🌈 A resistor has the colour bands grey, violet, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands yellow, black, brown. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does white stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1400 Ω resistor? (a) brown-yellow-orange (b) brown-yellow-brown (c) yellow-brown-red (d) brown-yellow-red
  24. 24.🌈 A resistor has the colour bands yellow, violet, orange. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does red stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 860 Ω resistor? (a) blue-grey-brown (b) grey-blue-black (c) grey-blue-red (d) grey-blue-brown
  27. 27.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 In the resistor colour code, which number does violet stand for?
  37. 37.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 In the resistor colour code, which number does yellow stand for?
  39. 39.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?

Answer key

  1. 5
  2. 750
  3. grey-brown-brown
  4. 1.8
  5. 31000
  6. the one nearest an end
  7. 9500
  8. violet-red-black
  9. 53
  10. white-orange-orange
  11. 8
  12. brown-yellow-brown
  13. 5 %
  14. 600
  15. 3
  16. 5.4
  17. grey-green-black
  18. 6
  19. 87
  20. 20
  21. 400
  22. 9
  23. brown-yellow-red
  24. 47000
  25. 2
  26. grey-blue-brown
  27. 60
  28. 51
  29. 2000
  30. 520
  31. 9700
  32. 990
  33. 250
  34. 3.6
  35. 3.3
  36. 7
  37. 13
  38. 4
  39. 340
  40. 54

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