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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 636 · 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 gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  2. 2.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does brown stand for?
  4. 4.🌈 In the resistor colour code, which number does black stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-black (b) brown-red-brown (c) brown-red-red (d) red-brown-brown
  6. 6.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 In the resistor colour code, which number does white stand for?
  9. 9.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87000 Ω resistor? (a) grey-violet-yellow (b) violet-grey-orange (c) grey-violet-orange (d) grey-violet-red
  11. 11.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) grey-yellow-black (b) green-grey-black (c) yellow-grey-brown (d) yellow-grey-black
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36000 Ω resistor? (a) orange-blue-yellow (b) orange-blue-red (c) orange-blue-orange (d) blue-orange-orange
  14. 14.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands yellow, blue, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands blue, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65000 Ω resistor? (a) blue-green-red (b) green-blue-orange (c) blue-green-orange (d) blue-green-yellow
  22. 22.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) blue-red-yellow (b) red-blue-orange (c) blue-red-orange (d) blue-red-red
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) green-brown-black (b) yellow-brown-black (c) brown-yellow-black (d) yellow-brown-brown
  25. 25.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) orange-red-brown (b) red-black-black (c) red-black-red (d) red-black-brown
  27. 27.🌈 In the resistor colour code, which number does green stand for?
  28. 28.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84000 Ω resistor? (a) grey-yellow-yellow (b) yellow-grey-orange (c) grey-yellow-orange (d) grey-yellow-red
  30. 30.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90000 Ω resistor? (a) white-black-orange (b) white-black-yellow (c) white-black-red (d) brown-white-orange
  32. 32.🌈 In the resistor colour code, which number does red stand for?
  33. 33.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands blue, violet, red. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does orange stand for?
  36. 36.🌈 A resistor has the colour bands green, green, brown. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31000 Ω resistor? (a) brown-orange-orange (b) orange-brown-red (c) orange-brown-yellow (d) orange-brown-orange
  38. 38.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 5 %
  2. 120
  3. 1
  4. 0
  5. brown-red-brown
  6. 50
  7. 20
  8. 9
  9. 820
  10. grey-violet-orange
  11. the one nearest an end
  12. yellow-grey-black
  13. orange-blue-orange
  14. 760
  15. 460
  16. 610
  17. 7
  18. 70
  19. 4.1
  20. 220
  21. blue-green-orange
  22. 890
  23. blue-red-orange
  24. yellow-brown-black
  25. 99000
  26. red-black-brown
  27. 5
  28. 250
  29. grey-yellow-orange
  30. 9.7
  31. white-black-orange
  32. 2
  33. 8800
  34. 6700
  35. 3
  36. 550
  37. orange-brown-orange
  38. 67
  39. 27000
  40. 8.2

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