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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 537 · 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) 25 % (b) 5 % (c) 0 % (d) 50 %
  2. 2.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40000 Ω resistor? (a) yellow-black-red (b) yellow-black-orange (c) green-yellow-orange (d) yellow-black-yellow
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 310 Ω resistor? (a) orange-brown-brown (b) orange-brown-red (c) orange-brown-black (d) brown-orange-brown
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1700 Ω resistor? (a) violet-brown-red (b) brown-violet-red (c) brown-violet-brown (d) brown-violet-orange
  6. 6.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  7. 7.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 In the resistor colour code, which number does white stand for?
  11. 11.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does green stand for?
  13. 13.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does yellow stand for?
  16. 16.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does orange stand for?
  18. 18.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands yellow, violet, orange. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) violet-grey-red (b) violet-grey-brown (c) grey-violet-red (d) violet-grey-orange
  22. 22.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 320 Ω resistor? (a) orange-red-red (b) red-orange-brown (c) orange-red-brown (d) orange-red-black
  24. 24.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands blue, green, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) white-black-black (b) brown-white-black (c) white-white-brown (d) white-white-black
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75000 Ω resistor? (a) violet-green-red (b) green-violet-orange (c) violet-green-yellow (d) violet-green-orange
  28. 28.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 890 Ω resistor? (a) white-grey-brown (b) grey-white-brown (c) grey-white-black (d) grey-white-red
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-red (b) brown-red-brown (c) brown-red-black (d) red-brown-brown
  31. 31.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does red stand for?
  33. 33.🌈 A resistor has the colour bands green, violet, brown. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands blue, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands grey, white, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8700 Ω resistor? (a) grey-violet-brown (b) grey-violet-red (c) grey-violet-orange (d) violet-grey-red

Answer key

  1. 5 %
  2. 1000
  3. yellow-black-orange
  4. orange-brown-brown
  5. brown-violet-red
  6. the one nearest an end
  7. 5100
  8. 600
  9. 240
  10. 9
  11. 750
  12. 5
  13. 70
  14. 450
  15. 4
  16. 6200
  17. 3
  18. 2.7
  19. 47000
  20. 210
  21. violet-grey-red
  22. 3.7
  23. orange-red-brown
  24. 10000
  25. 65
  26. white-white-black
  27. violet-green-orange
  28. 7.6
  29. grey-white-brown
  30. brown-red-brown
  31. 190
  32. 2
  33. 570
  34. 610
  35. 8900
  36. 2000
  37. 30000
  38. 800
  39. 44
  40. grey-violet-red

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