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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 514 · 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, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72000 Ω resistor? (a) violet-red-yellow (b) violet-red-red (c) red-violet-orange (d) violet-red-orange
  6. 6.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands blue, violet, orange. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) red-black-red (b) red-black-brown (c) orange-red-brown (d) red-black-black
  10. 10.🌈 A resistor has the colour bands yellow, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3200 Ω resistor? (a) red-orange-red (b) orange-red-red (c) orange-red-orange (d) orange-red-brown
  13. 13.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 560 Ω resistor? (a) green-blue-red (b) blue-green-brown (c) green-blue-brown (d) green-blue-black
  15. 15.🌈 In the resistor colour code, which number does blue stand for?
  16. 16.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands white, orange, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands green, grey, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) white-white-brown (b) brown-white-black (c) white-white-black (d) white-black-black
  22. 22.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) the gold band (d) any band
  23. 23.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-red (b) red-red-orange (c) red-red-brown (d) red-orange-red
  26. 26.🌈 In the resistor colour code, which number does red stand for?
  27. 27.🌈 In the resistor colour code, which number does black stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) grey-black-black (b) white-black-black (c) white-grey-black (d) grey-black-brown
  29. 29.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) brown-white-brown (b) red-white-black (c) white-brown-black (d) brown-white-black
  34. 34.🌈 A resistor has the colour bands green, red, red. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) orange-violet-orange (b) violet-orange-yellow (c) violet-orange-orange (d) violet-orange-red
  36. 36.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78000 Ω resistor? (a) grey-violet-orange (b) violet-grey-yellow (c) violet-grey-red (d) violet-grey-orange
  38. 38.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, orange, red. What is its value (in ohms)?

Answer key

  1. 44
  2. 67
  3. 7.9
  4. 5 %
  5. violet-red-orange
  6. 11000
  7. 1.3
  8. 67000
  9. red-black-brown
  10. 460
  11. 52000
  12. orange-red-red
  13. 33
  14. green-blue-brown
  15. 6
  16. 90
  17. 9300
  18. 58000
  19. 81
  20. 260
  21. white-white-black
  22. the one nearest an end
  23. 99
  24. 300
  25. red-red-red
  26. 2
  27. 0
  28. grey-black-black
  29. 200
  30. 7.7
  31. 450
  32. 92
  33. brown-white-black
  34. 5200
  35. violet-orange-orange
  36. 6400
  37. violet-grey-orange
  38. 5.8
  39. 31
  40. 2300

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