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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 209 · 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 colour bands (1st digit, 2nd digit, multiplier) mark a 3500 Ω resistor? (a) orange-green-orange (b) orange-green-brown (c) green-orange-red (d) orange-green-red
  2. 2.🌈 A resistor has the colour bands brown, blue, red. What is its value (in ohms)?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7500 Ω resistor? (a) violet-green-brown (b) green-violet-red (c) violet-green-orange (d) violet-green-red
  5. 5.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89000 Ω resistor? (a) grey-white-yellow (b) grey-white-orange (c) grey-white-red (d) white-grey-orange
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24000 Ω resistor? (a) red-yellow-red (b) yellow-red-orange (c) red-yellow-orange (d) red-yellow-yellow
  8. 8.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-red-black (b) red-black-brown (c) orange-black-black (d) red-black-black
  10. 10.🌈 A resistor has the colour bands violet, brown, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
  12. 12.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-red (b) red-black-orange (c) orange-red-orange (d) red-black-yellow
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9300 Ω resistor? (a) white-orange-orange (b) white-orange-brown (c) orange-white-red (d) white-orange-red
  18. 18.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands blue, grey, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does orange stand for?
  23. 23.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands yellow, black, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 450 Ω resistor? (a) yellow-green-black (b) yellow-green-brown (c) green-yellow-brown (d) yellow-green-red
  31. 31.🌈 In the resistor colour code, which number does green stand for?
  32. 32.🌈 A resistor has the colour bands violet, orange, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands orange, blue, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands violet, green, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 In the resistor colour code, which number does white stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96 Ω resistor? (a) brown-blue-black (b) white-blue-brown (c) blue-white-black (d) white-blue-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) green-grey-black (b) grey-yellow-black (c) yellow-grey-black (d) yellow-grey-brown
  40. 40.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. orange-green-red
  2. 1600
  3. 5 %
  4. violet-green-red
  5. 64
  6. grey-white-orange
  7. red-yellow-orange
  8. 3100
  9. red-black-black
  10. 71
  11. the one nearest an end
  12. 9.2
  13. 1200
  14. 8.2
  15. 100
  16. red-black-orange
  17. white-orange-red
  18. 720
  19. 810
  20. 68
  21. 30000
  22. 3
  23. 27000
  24. 28
  25. 24
  26. 9900
  27. 40
  28. 9.1
  29. 8.3
  30. yellow-green-brown
  31. 5
  32. 73000
  33. 36000
  34. 750
  35. 4700
  36. 33
  37. 9
  38. white-blue-black
  39. yellow-grey-black
  40. 50

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