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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 500 · 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 blue, yellow, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands green, grey, brown. What is its value (in ohms)?
  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 91000 Ω resistor? (a) white-brown-yellow (b) white-brown-red (c) brown-white-orange (d) white-brown-orange
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  6. 6.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
  7. 7.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
  8. 8.🌈 In the resistor colour code, which number does violet stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 600 Ω resistor? (a) violet-blue-brown (b) blue-black-black (c) blue-black-red (d) blue-black-brown
  10. 10.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) green-red-brown (b) red-green-black (c) green-red-black (d) blue-red-black
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) blue-brown-brown (b) brown-blue-black (c) violet-brown-black (d) blue-brown-black
  15. 15.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands green, grey, orange. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does red stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-red (b) green-red-red (c) red-green-orange (d) red-green-brown
  19. 19.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52000 Ω resistor? (a) green-red-yellow (b) green-red-red (c) red-green-orange (d) green-red-orange
  21. 21.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) red-violet-red (b) violet-red-brown (c) violet-red-orange (d) violet-red-red
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77000 Ω resistor? (a) violet-grey-orange (b) violet-violet-yellow (c) violet-violet-red (d) violet-violet-orange
  24. 24.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands violet, orange, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67 Ω resistor? (a) blue-violet-brown (b) violet-blue-black (c) violet-violet-black (d) blue-violet-black
  29. 29.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands violet, black, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 480 Ω resistor? (a) yellow-grey-red (b) grey-yellow-brown (c) yellow-grey-black (d) yellow-grey-brown
  34. 34.🌈 A resistor has the colour bands yellow, blue, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) brown-orange-black (b) yellow-brown-black (c) orange-brown-brown (d) orange-brown-black
  38. 38.🌈 In the resistor colour code, which number does black stand for?
  39. 39.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 64000
  2. 580
  3. 1
  4. white-brown-orange
  5. 5 %
  6. the one nearest an end
  7. 97
  8. 7
  9. blue-black-brown
  10. 4.4
  11. 85000
  12. 160
  13. green-red-black
  14. blue-brown-black
  15. 2
  16. 58000
  17. 2
  18. red-green-red
  19. 410
  20. green-red-orange
  21. 8500
  22. violet-red-red
  23. violet-violet-orange
  24. 220
  25. 110
  26. 7300
  27. 3.3
  28. blue-violet-black
  29. 890
  30. 700
  31. 1000
  32. 24
  33. yellow-grey-brown
  34. 46
  35. 450
  36. 51
  37. orange-brown-black
  38. 0
  39. 590
  40. 86

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