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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 965 · 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.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 In the resistor colour code, which number does orange stand for?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-black (b) red-brown-brown (c) orange-brown-black (d) brown-red-black
  4. 4.🌈 A resistor has the colour bands green, brown, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  7. 7.🌈 A resistor has the colour bands green, blue, red. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands blue, grey, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands white, grey, black. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 46000 Ω resistor? (a) blue-yellow-orange (b) yellow-blue-orange (c) yellow-blue-yellow (d) yellow-blue-red
  11. 11.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  12. 12.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does green stand for?
  14. 14.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does grey stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) brown-yellow-black (b) yellow-brown-brown (c) brown-yellow-red (d) brown-yellow-brown
  18. 18.🌈 In the resistor colour code, which number does yellow stand for?
  19. 19.🌈 In the resistor colour code, which number does white stand for?
  20. 20.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) yellow-green-brown (b) yellow-green-black (c) green-yellow-black (d) green-green-black
  22. 22.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does brown stand for?
  25. 25.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does red stand for?
  28. 28.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) blue-red-brown (b) blue-red-black (c) blue-red-red (d) red-blue-brown
  35. 35.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18000 Ω resistor? (a) brown-grey-yellow (b) grey-brown-orange (c) brown-grey-orange (d) brown-grey-red
  37. 37.🌈 A resistor has the colour bands blue, yellow, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands white, violet, orange. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does blue stand for?

Answer key

  1. 4.6
  2. 3
  3. red-brown-black
  4. 5.1
  5. 110
  6. 5 %
  7. 5600
  8. 68
  9. 98
  10. yellow-blue-orange
  11. the one nearest an end
  12. 1
  13. 5
  14. 91
  15. 97
  16. 8
  17. brown-yellow-brown
  18. 4
  19. 9
  20. 610
  21. yellow-green-black
  22. 8000
  23. 6.9
  24. 1
  25. 590
  26. 32000
  27. 2
  28. 7.6
  29. 210
  30. 74
  31. 20
  32. 6.6
  33. 3600
  34. blue-red-brown
  35. 470
  36. brown-grey-orange
  37. 6.4
  38. 3.6
  39. 97000
  40. 6

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