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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 501 · 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.🌈 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
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9100 Ω resistor? (a) white-brown-orange (b) white-brown-red (c) brown-white-red (d) white-brown-brown
  3. 3.🌈 In the resistor colour code, which number does brown stand for?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) grey-green-black (b) green-grey-brown (c) blue-grey-black (d) green-grey-black
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  6. 6.🌈 A resistor has the colour bands white, red, orange. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) grey-green-red (b) grey-green-yellow (c) green-grey-orange (d) grey-green-orange
  9. 9.🌈 In the resistor colour code, which number does black stand for?
  10. 10.🌈 In the resistor colour code, which number does violet stand for?
  11. 11.🌈 In the resistor colour code, which number does white stand for?
  12. 12.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does red stand for?
  15. 15.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands violet, green, orange. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) yellow-red-red (b) red-yellow-brown (c) yellow-red-black (d) yellow-red-brown
  18. 18.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands brown, white, orange. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) red-violet-orange (b) red-violet-yellow (c) red-violet-red (d) violet-red-orange
  21. 21.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands yellow, black, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-black (b) red-brown-brown (c) brown-red-black (d) orange-brown-black
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6500 Ω resistor? (a) blue-green-orange (b) green-blue-red (c) blue-green-red (d) blue-green-brown
  32. 32.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands blue, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 440 Ω resistor? (a) yellow-green-brown (b) yellow-yellow-brown (c) yellow-yellow-red (d) yellow-yellow-black
  39. 39.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. white-brown-red
  3. 1
  4. green-grey-black
  5. 5 %
  6. 92000
  7. 89000
  8. grey-green-orange
  9. 0
  10. 7
  11. 9
  12. 3.3
  13. 400
  14. 2
  15. 790
  16. 75000
  17. yellow-red-brown
  18. 28
  19. 19000
  20. red-violet-orange
  21. 760
  22. 1.6
  23. 4800
  24. 2400
  25. 4000
  26. 20
  27. 450
  28. 320
  29. 49
  30. red-brown-black
  31. blue-green-red
  32. 390
  33. 7
  34. 2.7
  35. 630
  36. 1
  37. 6900
  38. yellow-yellow-brown
  39. 500
  40. 110

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