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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 819 · 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.

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  1. 1.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4200 Ω resistor? (a) yellow-red-red (b) yellow-red-brown (c) yellow-red-orange (d) red-yellow-red
  3. 3.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
  4. 4.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 In the resistor colour code, which number does orange stand for?
  6. 6.🌈 In the resistor colour code, which number does red stand for?
  7. 7.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands red, violet, brown. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands green, white, red. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71 Ω resistor? (a) brown-violet-black (b) grey-brown-black (c) violet-brown-brown (d) violet-brown-black
  11. 11.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
  13. 13.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) green-grey-orange (b) grey-green-orange (c) grey-green-red (d) grey-green-yellow
  15. 15.🌈 A resistor has the colour bands white, blue, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 730 Ω resistor? (a) orange-violet-brown (b) violet-orange-red (c) violet-orange-black (d) violet-orange-brown
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) yellow-orange-brown (b) orange-yellow-black (c) yellow-orange-black (d) green-orange-black
  19. 19.🌈 In the resistor colour code, which number does blue stand for?
  20. 20.🌈 A resistor has the colour bands white, violet, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands blue, red, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does violet stand for?
  26. 26.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6400 Ω resistor? (a) yellow-blue-red (b) blue-yellow-orange (c) blue-yellow-brown (d) blue-yellow-red
  29. 29.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 650 Ω resistor? (a) blue-green-brown (b) blue-green-black (c) blue-green-red (d) green-blue-brown
  32. 32.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 46 Ω resistor? (a) yellow-blue-brown (b) green-blue-black (c) blue-yellow-black (d) yellow-blue-black
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) grey-grey-black (b) grey-violet-black (c) violet-grey-brown (d) violet-grey-black
  35. 35.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6100 Ω resistor? (a) brown-blue-red (b) blue-brown-brown (c) blue-brown-orange (d) blue-brown-red
  37. 37.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands white, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) red-brown-black (b) brown-red-brown (c) brown-red-black (d) red-red-black

Answer key

  1. 610
  2. yellow-red-red
  3. the one nearest an end
  4. 53
  5. 3
  6. 2
  7. 780
  8. 270
  9. 5900
  10. violet-brown-black
  11. 34000
  12. 290
  13. 5 %
  14. grey-green-orange
  15. 96000
  16. 39
  17. violet-orange-brown
  18. yellow-orange-black
  19. 6
  20. 97
  21. 6.2
  22. 20
  23. 6500
  24. 1500
  25. 7
  26. 72
  27. 12000
  28. blue-yellow-red
  29. 62000
  30. 66
  31. blue-green-brown
  32. 1.6
  33. yellow-blue-black
  34. violet-grey-black
  35. 83000
  36. blue-brown-red
  37. 50
  38. 810
  39. 940
  40. brown-red-black

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