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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 519 · 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 red, brown, brown. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26 Ω resistor? (a) red-blue-black (b) orange-blue-black (c) red-blue-brown (d) blue-red-black
  4. 4.🌈 In the resistor colour code, which number does blue stand for?
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6400 Ω resistor? (a) yellow-blue-red (b) blue-yellow-red (c) blue-yellow-orange (d) blue-yellow-brown
  7. 7.🌈 In the resistor colour code, which number does black stand for?
  8. 8.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) grey-red-orange (b) red-grey-orange (c) red-grey-red (d) red-grey-yellow
  10. 10.🌈 A resistor has the colour bands brown, blue, brown. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the gold band (d) the widest gap
  14. 14.🌈 A resistor has the colour bands green, blue, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands green, green, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 470 Ω resistor? (a) yellow-violet-red (b) yellow-violet-black (c) violet-yellow-brown (d) yellow-violet-brown
  17. 17.🌈 A resistor has the colour bands white, brown, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) brown-orange-black (b) white-orange-brown (c) white-orange-black (d) orange-white-black
  20. 20.🌈 In the resistor colour code, which number does brown stand for?
  21. 21.🌈 In the resistor colour code, which number does green stand for?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32 Ω resistor? (a) red-orange-black (b) yellow-red-black (c) orange-red-brown (d) orange-red-black
  23. 23.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48000 Ω resistor? (a) yellow-grey-orange (b) yellow-grey-yellow (c) yellow-grey-red (d) grey-yellow-orange
  25. 25.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does red stand for?
  28. 28.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands yellow, black, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1300 Ω resistor? (a) orange-brown-red (b) brown-orange-orange (c) brown-orange-red (d) brown-orange-brown
  36. 36.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 In the resistor colour code, which number does violet stand for?
  40. 40.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?

Answer key

  1. 210
  2. 73
  3. red-blue-black
  4. 6
  5. 5 %
  6. blue-yellow-red
  7. 0
  8. 760
  9. red-grey-orange
  10. 160
  11. 74
  12. 26
  13. the one nearest an end
  14. 560
  15. 550
  16. yellow-violet-brown
  17. 91
  18. 72
  19. white-orange-black
  20. 1
  21. 5
  22. orange-red-black
  23. 21
  24. yellow-grey-orange
  25. 4.6
  26. 8.7
  27. 2
  28. 53000
  29. 1700
  30. 5.5
  31. 6
  32. 400
  33. 9.1
  34. 6.7
  35. brown-orange-red
  36. 190
  37. 470
  38. 430
  39. 7
  40. 120

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