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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 756 · 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 orange stand for?
  2. 2.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-black (b) red-red-red (c) red-orange-brown (d) red-red-brown
  4. 4.🌈 A resistor has the colour bands green, blue, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) brown-red-red (b) red-brown-red (c) red-brown-orange (d) red-brown-brown
  6. 6.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
  7. 7.🌈 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
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 910 Ω resistor? (a) brown-white-brown (b) white-brown-black (c) white-brown-brown (d) white-brown-red
  9. 9.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands blue, grey, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands blue, grey, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 25 % (d) 50 %
  14. 14.🌈 In the resistor colour code, which number does blue stand for?
  15. 15.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 340 Ω resistor? (a) yellow-orange-brown (b) orange-yellow-brown (c) orange-yellow-red (d) orange-yellow-black
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) blue-green-orange (b) green-black-red (c) green-black-orange (d) green-black-yellow
  18. 18.🌈 In the resistor colour code, which number does violet stand for?
  19. 19.🌈 A resistor has the colour bands green, grey, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89 Ω resistor? (a) white-white-black (b) grey-white-brown (c) grey-white-black (d) white-grey-black
  22. 22.🌈 In the resistor colour code, which number does red stand for?
  23. 23.🌈 In the resistor colour code, which number does white stand for?
  24. 24.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does yellow stand for?
  26. 26.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands red, grey, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 In the resistor colour code, which number does grey stand for?
  30. 30.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92 Ω resistor? (a) red-white-black (b) brown-red-black (c) white-red-black (d) white-red-brown
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) green-brown-brown (b) green-brown-black (c) brown-green-brown (d) green-brown-red
  33. 33.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands blue, blue, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) violet-blue-black (b) blue-violet-brown (c) violet-blue-red (d) violet-blue-brown
  40. 40.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 3
  2. 470
  3. red-red-brown
  4. 56
  5. red-brown-red
  6. 8200
  7. the one nearest an end
  8. white-brown-brown
  9. 37
  10. 68000
  11. 420
  12. 68
  13. 5 %
  14. 6
  15. 41000
  16. orange-yellow-brown
  17. green-black-orange
  18. 7
  19. 58
  20. 9900
  21. grey-white-black
  22. 2
  23. 9
  24. 410
  25. 4
  26. 570
  27. 28
  28. 7.9
  29. 8
  30. 63
  31. white-red-black
  32. green-brown-brown
  33. 3200
  34. 880
  35. 200
  36. 66000
  37. 6500
  38. 10
  39. violet-blue-brown
  40. 590

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