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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 991 · 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.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 50 % (d) 0 %
  2. 2.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9500 Ω resistor? (a) green-white-red (b) white-green-red (c) white-green-orange (d) white-green-brown
  5. 5.🌈 A resistor has the colour bands violet, violet, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands brown, orange, orange. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33 Ω resistor? (a) orange-yellow-black (b) orange-orange-black (c) yellow-orange-black (d) orange-orange-brown
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74 Ω resistor? (a) yellow-violet-black (b) grey-yellow-black (c) violet-yellow-black (d) violet-yellow-brown
  9. 9.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) red-red-black (b) brown-red-black (c) red-brown-black (d) brown-red-brown
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27 Ω resistor? (a) violet-red-black (b) red-violet-brown (c) orange-violet-black (d) red-violet-black
  13. 13.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9600 Ω resistor? (a) white-blue-brown (b) white-blue-orange (c) white-blue-red (d) blue-white-red
  15. 15.🌈 A resistor has the colour bands orange, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands yellow, white, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 In the resistor colour code, which number does violet stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1500 Ω resistor? (a) brown-green-red (b) brown-green-orange (c) brown-green-brown (d) green-brown-red
  21. 21.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) white-white-black (b) white-white-brown (c) white-black-black (d) brown-white-black
  23. 23.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70000 Ω resistor? (a) violet-black-red (b) violet-black-yellow (c) grey-violet-orange (d) violet-black-orange
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18000 Ω resistor? (a) grey-brown-orange (b) brown-grey-yellow (c) brown-grey-orange (d) brown-grey-red
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) yellow-orange-orange (b) orange-black-orange (c) orange-black-yellow (d) orange-black-red
  27. 27.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38000 Ω resistor? (a) orange-grey-red (b) grey-orange-orange (c) orange-grey-yellow (d) orange-grey-orange
  30. 30.🌈 In the resistor colour code, which number does blue stand for?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-red-black (b) orange-black-black (c) red-black-black (d) red-black-brown
  32. 32.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does red stand for?
  35. 35.🌈 A resistor has the colour bands violet, red, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 5 %
  2. 320
  3. 33
  4. white-green-red
  5. 770
  6. 13000
  7. orange-orange-black
  8. violet-yellow-black
  9. 8.2
  10. the one nearest an end
  11. brown-red-black
  12. red-violet-black
  13. 16
  14. white-blue-red
  15. 330
  16. 19
  17. 4.2
  18. 49
  19. 7
  20. brown-green-red
  21. 390
  22. white-white-black
  23. 27
  24. violet-black-orange
  25. brown-grey-orange
  26. orange-black-orange
  27. 27
  28. 3200
  29. orange-grey-orange
  30. 6
  31. red-black-black
  32. 12000
  33. 120
  34. 2
  35. 7200
  36. 660
  37. 80
  38. 9200
  39. 14000
  40. 2.7

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