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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 967 · 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 resistor has the colour bands violet, grey, orange. What is its value (in ohms)?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  3. 3.🌈 In the resistor colour code, which number does black stand for?
  4. 4.🌈 In the resistor colour code, which number does violet stand for?
  5. 5.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
  6. 6.🌈 In the resistor colour code, which number does red stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33000 Ω resistor? (a) orange-orange-orange (b) orange-orange-red (c) orange-orange-yellow (d) orange-yellow-orange
  8. 8.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does green stand for?
  10. 10.🌈 In the resistor colour code, which number does brown stand for?
  11. 11.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-brown (b) red-grey-black (c) red-grey-red (d) grey-red-brown
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) yellow-orange-black (b) orange-yellow-brown (c) yellow-yellow-black (d) orange-yellow-black
  15. 15.🌈 In the resistor colour code, which number does blue stand for?
  16. 16.🌈 In the resistor colour code, which number does grey stand for?
  17. 17.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does orange stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 970 Ω resistor? (a) violet-white-brown (b) white-violet-red (c) white-violet-brown (d) white-violet-black
  26. 26.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-red (b) green-red-red (c) red-green-brown (d) red-green-orange
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) grey-violet-brown (b) violet-grey-black (c) white-violet-black (d) grey-violet-black
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-brown (b) yellow-brown-black (c) brown-orange-black (d) orange-brown-black
  31. 31.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands yellow, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) brown-violet-brown (b) brown-violet-black (c) violet-brown-brown (d) brown-violet-red
  34. 34.🌈 A resistor has the colour bands grey, green, brown. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands violet, orange, red. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-yellow-brown (b) yellow-green-black (c) yellow-yellow-black (d) green-yellow-black
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86 Ω resistor? (a) grey-blue-brown (b) grey-blue-black (c) blue-grey-black (d) white-blue-black
  38. 38.🌈 A resistor has the colour bands brown, white, red. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) brown-white-red (b) white-brown-brown (c) brown-white-black (d) brown-white-brown
  40. 40.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 78000
  2. 5 %
  3. 0
  4. 7
  5. the one nearest an end
  6. 2
  7. orange-orange-orange
  8. 2.4
  9. 5
  10. 1
  11. 4200
  12. 8100
  13. red-grey-brown
  14. orange-yellow-black
  15. 6
  16. 8
  17. 37
  18. 8.9
  19. 26
  20. 6.9
  21. 11000
  22. 80
  23. 5.4
  24. 3
  25. white-violet-brown
  26. 63
  27. 23
  28. red-green-red
  29. grey-violet-black
  30. orange-brown-black
  31. 910
  32. 480
  33. brown-violet-brown
  34. 850
  35. 7300
  36. yellow-yellow-black
  37. grey-blue-black
  38. 1900
  39. brown-white-brown
  40. 1.8

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