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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 27 · 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 brown, red, orange. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does yellow stand for?
  3. 3.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does black stand for?
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  6. 6.🌈 In the resistor colour code, which number does green stand for?
  7. 7.🌈 A resistor has the colour bands blue, blue, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands orange, green, red. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands white, violet, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3200 Ω resistor? (a) orange-red-orange (b) orange-red-red (c) orange-red-brown (d) red-orange-red
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) grey-red-black (b) grey-red-brown (c) white-red-black (d) red-grey-black
  17. 17.🌈 In the resistor colour code, which number does grey stand for?
  18. 18.🌈 A resistor has the colour bands white, orange, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does blue stand for?
  22. 22.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands violet, orange, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 490 Ω resistor? (a) yellow-white-black (b) yellow-white-red (c) yellow-white-brown (d) white-yellow-brown
  25. 25.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-orange (b) red-black-yellow (c) orange-red-orange (d) red-black-red
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 330 Ω resistor? (a) orange-yellow-brown (b) orange-orange-brown (c) orange-orange-black (d) orange-orange-red
  30. 30.🌈 In the resistor colour code, which number does white stand for?
  31. 31.🌈 A resistor has the colour bands white, orange, orange. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34000 Ω resistor? (a) yellow-orange-orange (b) orange-yellow-red (c) orange-yellow-orange (d) orange-yellow-yellow
  33. 33.🌈 A resistor has the colour bands grey, violet, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands white, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1300 Ω resistor? (a) brown-orange-orange (b) brown-orange-red (c) orange-brown-red (d) brown-orange-brown
  38. 38.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5800 Ω resistor? (a) green-grey-red (b) green-grey-brown (c) green-grey-orange (d) grey-green-red
  40. 40.🌈 In the resistor colour code, which number does red stand for?

Answer key

  1. 12000
  2. 4
  3. 21
  4. 0
  5. 5 %
  6. 5
  7. 66000
  8. 3500
  9. 4700
  10. 97
  11. 2.7
  12. 7.2
  13. 2.3
  14. the one nearest an end
  15. orange-red-red
  16. grey-red-black
  17. 8
  18. 93
  19. 25
  20. 2000
  21. 6
  22. 9000
  23. 7.3
  24. yellow-white-brown
  25. 2.2
  26. 27
  27. 37
  28. red-black-orange
  29. orange-orange-brown
  30. 9
  31. 93000
  32. orange-yellow-orange
  33. 8700
  34. 930
  35. 7.9
  36. 3.1
  37. brown-orange-red
  38. 1.3
  39. green-grey-red
  40. 2

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