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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 410 · 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 blue stand for?
  2. 2.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) orange-black-orange (b) orange-black-red (c) orange-black-brown (d) yellow-orange-red
  4. 4.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 310 Ω resistor? (a) orange-brown-black (b) orange-brown-red (c) orange-brown-brown (d) brown-orange-brown
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) yellow-red-orange (b) yellow-red-red (c) yellow-red-yellow (d) red-yellow-orange
  7. 7.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does black stand for?
  12. 12.🌈 A resistor has the colour bands orange, red, brown. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does green stand for?
  14. 14.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2400 Ω resistor? (a) red-yellow-brown (b) yellow-red-red (c) red-yellow-red (d) red-yellow-orange
  17. 17.🌈 In the resistor colour code, which number does grey stand for?
  18. 18.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does brown stand for?
  23. 23.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) the gold band (d) any band
  24. 24.🌈 A resistor has the colour bands yellow, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does red stand for?
  26. 26.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 740 Ω resistor? (a) violet-yellow-red (b) violet-yellow-brown (c) yellow-violet-brown (d) violet-yellow-black
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3800 Ω resistor? (a) orange-grey-brown (b) orange-grey-red (c) orange-grey-orange (d) grey-orange-red
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81000 Ω resistor? (a) grey-brown-orange (b) grey-brown-red (c) brown-grey-orange (d) grey-brown-yellow
  31. 31.🌈 In the resistor colour code, which number does violet stand for?
  32. 32.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does yellow stand for?
  36. 36.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, blue, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 6
  2. 340
  3. orange-black-red
  4. 780
  5. orange-brown-brown
  6. yellow-red-orange
  7. 70
  8. 54000
  9. 5.5
  10. 8100
  11. 0
  12. 320
  13. 5
  14. 18
  15. 5 %
  16. red-yellow-red
  17. 8
  18. 22
  19. 9.9
  20. 3900
  21. 88
  22. 1
  23. the one nearest an end
  24. 460
  25. 2
  26. 39
  27. 14000
  28. violet-yellow-brown
  29. orange-grey-red
  30. grey-brown-orange
  31. 7
  32. 22
  33. 3.9
  34. 2000
  35. 4
  36. 1800
  37. 1600
  38. 5000
  39. 67
  40. 5.2

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