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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 787 · 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 white, grey, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands yellow, white, red. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does red stand for?
  4. 4.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands blue, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) red-violet-red (b) red-violet-orange (c) violet-red-orange (d) red-violet-yellow
  7. 7.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 720 Ω resistor? (a) violet-red-red (b) violet-red-black (c) red-violet-brown (d) violet-red-brown
  9. 9.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  11. 11.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  12. 12.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  13. 13.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands yellow, blue, orange. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands green, grey, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does black stand for?
  21. 21.🌈 In the resistor colour code, which number does green stand for?
  22. 22.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) grey-violet-black (b) white-violet-black (c) grey-violet-brown (d) violet-grey-black
  25. 25.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6300 Ω resistor? (a) blue-orange-red (b) orange-blue-red (c) blue-orange-orange (d) blue-orange-brown
  29. 29.🌈 A resistor has the colour bands blue, orange, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) yellow-grey-brown (b) grey-yellow-red (c) yellow-grey-red (d) yellow-grey-orange
  34. 34.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-yellow (c) red-orange-orange (d) red-orange-red
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 590 Ω resistor? (a) green-white-brown (b) white-green-brown (c) green-white-black (d) green-white-red
  37. 37.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does grey stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 960 Ω resistor? (a) white-blue-black (b) blue-white-brown (c) white-blue-brown (d) white-blue-red
  40. 40.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 98
  2. 4900
  3. 2
  4. 8.2
  5. 640
  6. red-violet-orange
  7. 8
  8. violet-red-brown
  9. 1.6
  10. the one nearest an end
  11. 18000
  12. 5 %
  13. 71
  14. 46000
  15. 58000
  16. 320
  17. 100
  18. 720
  19. 6900
  20. 0
  21. 5
  22. 36
  23. 6.8
  24. grey-violet-black
  25. 84
  26. 3
  27. 510
  28. blue-orange-red
  29. 630
  30. 220
  31. 83000
  32. 38000
  33. yellow-grey-red
  34. 90
  35. red-orange-orange
  36. green-white-brown
  37. 20000
  38. 8
  39. white-blue-brown
  40. 1.7

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