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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 125 · 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 yellow, yellow, brown. What is its value (in ohms)?
  2. 2.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) any band (d) the widest gap
  3. 3.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32 Ω resistor? (a) yellow-red-black (b) orange-red-black (c) red-orange-black (d) orange-red-brown
  6. 6.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) brown-white-red (b) brown-white-brown (c) brown-white-black (d) white-brown-brown
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  9. 9.🌈 A resistor has the colour bands white, green, brown. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does red stand for?
  13. 13.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-orange (b) red-red-brown (c) red-orange-red (d) red-red-red
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8400 Ω resistor? (a) grey-yellow-orange (b) grey-yellow-brown (c) yellow-grey-red (d) grey-yellow-red
  16. 16.🌈 In the resistor colour code, which number does violet stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90000 Ω resistor? (a) white-black-yellow (b) white-black-red (c) brown-white-orange (d) white-black-orange
  18. 18.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 In the resistor colour code, which number does white stand for?
  20. 20.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-brown (b) orange-brown-black (c) brown-red-black (d) red-brown-black
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) green-brown-red (b) brown-green-orange (c) green-brown-yellow (d) green-brown-orange
  29. 29.🌈 A resistor has the colour bands yellow, blue, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does black stand for?
  31. 31.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) yellow-red-brown (b) yellow-red-red (c) yellow-red-black (d) red-yellow-brown
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8800 Ω resistor? (a) grey-white-red (b) grey-grey-red (c) grey-grey-orange (d) grey-grey-brown
  35. 35.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands yellow, violet, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  39. 39.🌈 In the resistor colour code, which number does blue stand for?
  40. 40.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?

Answer key

  1. 440
  2. the one nearest an end
  3. 6.3
  4. 71
  5. orange-red-black
  6. 9
  7. brown-white-brown
  8. 5 %
  9. 950
  10. 2600
  11. 370
  12. 2
  13. 920
  14. red-red-red
  15. grey-yellow-red
  16. 7
  17. white-black-orange
  18. 88
  19. 9
  20. 790
  21. 490
  22. 220
  23. 22000
  24. 5.9
  25. 12
  26. 3600
  27. red-brown-black
  28. green-brown-orange
  29. 46
  30. 0
  31. 400
  32. 7.1
  33. yellow-red-brown
  34. grey-grey-red
  35. 1
  36. 100
  37. 47000
  38. 64
  39. 6
  40. 1100

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