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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 774 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) white-violet-black (b) grey-white-black (c) violet-white-black (d) violet-white-brown
  2. 2.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  5. 5.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) white-brown-brown (b) brown-white-brown (c) brown-white-black (d) brown-white-red
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8100 Ω resistor? (a) grey-brown-orange (b) grey-brown-brown (c) brown-grey-red (d) grey-brown-red
  8. 8.🌈 In the resistor colour code, which number does orange stand for?
  9. 9.🌈 In the resistor colour code, which number does blue stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 680 Ω resistor? (a) blue-grey-red (b) blue-grey-brown (c) blue-grey-black (d) grey-blue-brown
  11. 11.🌈 In the resistor colour code, which number does black stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-brown-red (b) brown-brown-brown (c) brown-brown-orange (d) brown-red-red
  13. 13.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) green-brown-black (b) brown-green-brown (c) green-brown-red (d) green-brown-brown
  16. 16.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands red, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands orange, orange, brown. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands yellow, grey, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 850 Ω resistor? (a) green-grey-brown (b) grey-green-red (c) grey-green-brown (d) grey-green-black
  22. 22.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) grey-white-brown (b) white-grey-black (c) white-grey-red (d) white-grey-brown
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 710 Ω resistor? (a) violet-brown-black (b) brown-violet-brown (c) violet-brown-brown (d) violet-brown-red
  27. 27.🌈 A resistor has the colour bands blue, violet, red. What is its value (in ohms)?
  28. 28.🌈 In the resistor colour code, which number does yellow stand for?
  29. 29.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 610 Ω resistor? (a) blue-brown-red (b) brown-blue-brown (c) blue-brown-black (d) blue-brown-brown
  32. 32.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does brown stand for?
  34. 34.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands yellow, black, red. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5000 Ω resistor? (a) green-black-orange (b) green-black-red (c) blue-green-red (d) green-black-brown
  37. 37.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?

Answer key

  1. violet-white-black
  2. 4.2
  3. 780
  4. 5 %
  5. the one nearest an end
  6. brown-white-brown
  7. grey-brown-red
  8. 3
  9. 6
  10. blue-grey-brown
  11. 0
  12. brown-brown-red
  13. 26
  14. 8500
  15. green-brown-brown
  16. 8100
  17. 280
  18. 53000
  19. 330
  20. 48
  21. grey-green-brown
  22. 700
  23. 210
  24. 84
  25. white-grey-brown
  26. violet-brown-brown
  27. 6700
  28. 4
  29. 64
  30. 950
  31. blue-brown-brown
  32. 1700
  33. 1
  34. 89
  35. 4000
  36. green-black-red
  37. 2.5
  38. 10
  39. 8.8
  40. 140

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