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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 851 · 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.🌈 In the resistor colour code, which number does yellow stand for?
  2. 2.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the widest gap (d) the gold band
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) green-grey-red (b) green-grey-brown (c) grey-green-brown (d) green-grey-black
  4. 4.🌈 A resistor has the colour bands red, white, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 In the resistor colour code, which number does brown stand for?
  6. 6.🌈 A resistor has the colour bands grey, violet, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  9. 9.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does violet stand for?
  11. 11.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-red-brown (b) brown-brown-red (c) brown-brown-brown (d) brown-brown-black
  13. 13.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89 Ω resistor? (a) white-white-black (b) grey-white-brown (c) white-grey-black (d) grey-white-black
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) white-black-brown (b) white-black-black (c) brown-white-black (d) brown-black-black
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8500 Ω resistor? (a) green-grey-red (b) grey-green-brown (c) grey-green-red (d) grey-green-orange
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) white-grey-black (b) white-grey-brown (c) grey-white-brown (d) white-grey-red
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) blue-black-orange (b) violet-blue-red (c) blue-black-brown (d) blue-black-red
  19. 19.🌈 In the resistor colour code, which number does grey stand for?
  20. 20.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does green stand for?
  22. 22.🌈 In the resistor colour code, which number does black stand for?
  23. 23.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8700 Ω resistor? (a) grey-violet-red (b) grey-violet-orange (c) violet-grey-red (d) grey-violet-brown
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32 Ω resistor? (a) orange-red-brown (b) red-orange-black (c) yellow-red-black (d) orange-red-black
  26. 26.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands grey, yellow, orange. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) brown-grey-brown (b) brown-grey-red (c) brown-grey-orange (d) grey-brown-red
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9100 Ω resistor? (a) brown-white-red (b) white-brown-orange (c) white-brown-brown (d) white-brown-red
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) green-violet-black (b) violet-green-brown (c) grey-green-black (d) violet-green-black
  33. 33.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 350 Ω resistor? (a) orange-green-red (b) green-orange-brown (c) orange-green-black (d) orange-green-brown
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) blue-green-black (b) green-black-black (c) blue-black-black (d) green-black-brown
  36. 36.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands orange, red, brown. What is its value (in ohms)?

Answer key

  1. 4
  2. the one nearest an end
  3. green-grey-brown
  4. 2.9
  5. 1
  6. 87
  7. 72
  8. 5 %
  9. 73
  10. 7
  11. 34000
  12. brown-brown-brown
  13. 8.7
  14. grey-white-black
  15. white-black-black
  16. grey-green-red
  17. white-grey-brown
  18. blue-black-red
  19. 8
  20. 82000
  21. 5
  22. 0
  23. 820
  24. grey-violet-red
  25. orange-red-black
  26. 9700
  27. 84000
  28. 950
  29. 4.4
  30. brown-grey-red
  31. white-brown-red
  32. violet-green-black
  33. 240
  34. orange-green-brown
  35. green-black-black
  36. 96
  37. 10
  38. 28
  39. 980
  40. 320

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