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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 908 · 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 green, orange, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 In the resistor colour code, which number does black stand for?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) white-violet-black (b) grey-violet-brown (c) grey-violet-black (d) violet-grey-black
  4. 4.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) grey-grey-black (b) violet-grey-black (c) violet-grey-brown (d) grey-violet-black
  7. 7.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
  8. 8.🌈 A resistor has the colour bands orange, black, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands violet, brown, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  12. 12.🌈 A resistor has the colour bands violet, violet, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) red-orange-brown (b) orange-red-black (c) orange-orange-black (d) red-orange-black
  15. 15.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) red-brown-red (b) brown-red-brown (c) red-brown-black (d) red-brown-brown
  18. 18.🌈 In the resistor colour code, which number does yellow stand for?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49000 Ω resistor? (a) yellow-white-yellow (b) yellow-white-orange (c) white-yellow-orange (d) yellow-white-red
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) yellow-white-black (b) white-yellow-black (c) brown-yellow-black (d) white-yellow-brown
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 60 Ω resistor? (a) violet-blue-black (b) violet-black-black (c) blue-black-brown (d) blue-black-black
  23. 23.🌈 In the resistor colour code, which number does red stand for?
  24. 24.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does white stand for?
  36. 36.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands grey, white, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 In the resistor colour code, which number does grey stand for?
  39. 39.🌈 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
  40. 40.🌈 In the resistor colour code, which number does orange stand for?

Answer key

  1. 5.3
  2. 0
  3. grey-violet-black
  4. 83000
  5. 9.1
  6. violet-grey-black
  7. the one nearest an end
  8. 30
  9. 90
  10. 71
  11. 5 %
  12. 770
  13. 790
  14. red-orange-black
  15. 720
  16. 1.2
  17. red-brown-brown
  18. 4
  19. yellow-white-orange
  20. white-yellow-black
  21. 1
  22. blue-black-black
  23. 2
  24. 7.7
  25. 2.3
  26. 23000
  27. 3
  28. 5100
  29. 260
  30. 6900
  31. 2.5
  32. 620
  33. 82000
  34. 12
  35. 9
  36. 4.1
  37. 89
  38. 8
  39. grey-brown-brown
  40. 3

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