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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 112 · 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 25 Ω resistor? (a) green-red-black (b) orange-green-black (c) red-green-black (d) red-green-brown
  2. 2.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) the widest gap (d) any band
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 25 % (d) 50 %
  4. 4.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does brown stand for?
  7. 7.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7500 Ω resistor? (a) violet-green-orange (b) violet-green-brown (c) green-violet-red (d) violet-green-red
  10. 10.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does white stand for?
  12. 12.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands grey, yellow, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands yellow, red, orange. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does green stand for?
  16. 16.🌈 A resistor has the colour bands white, green, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands green, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) red-yellow-orange (b) yellow-red-red (c) yellow-red-orange (d) yellow-red-yellow
  19. 19.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) yellow-brown-orange (b) yellow-brown-yellow (c) yellow-brown-red (d) brown-yellow-orange
  21. 21.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54000 Ω resistor? (a) green-yellow-orange (b) green-yellow-yellow (c) yellow-green-orange (d) green-yellow-red
  26. 26.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7000 Ω resistor? (a) violet-black-red (b) violet-black-orange (c) violet-black-brown (d) grey-violet-red
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-brown (b) brown-orange-black (c) orange-brown-black (d) yellow-brown-black
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32000 Ω resistor? (a) red-orange-orange (b) orange-red-red (c) orange-red-orange (d) orange-red-yellow
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 670 Ω resistor? (a) blue-violet-red (b) violet-blue-brown (c) blue-violet-brown (d) blue-violet-black
  33. 33.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 In the resistor colour code, which number does black stand for?
  36. 36.🌈 A resistor has the colour bands yellow, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) green-grey-black (b) grey-yellow-black (c) yellow-grey-brown (d) yellow-grey-black
  38. 38.🌈 In the resistor colour code, which number does yellow stand for?
  39. 39.🌈 In the resistor colour code, which number does orange stand for?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 17000 Ω resistor? (a) brown-violet-red (b) brown-violet-yellow (c) violet-brown-orange (d) brown-violet-orange

Answer key

  1. red-green-black
  2. the one nearest an end
  3. 5 %
  4. 98000
  5. 590
  6. 1
  7. 96
  8. 390
  9. violet-green-red
  10. 6
  11. 9
  12. 120
  13. 840
  14. 42000
  15. 5
  16. 95
  17. 530
  18. yellow-red-orange
  19. 8.6
  20. yellow-brown-orange
  21. 690
  22. 830
  23. 7.2
  24. 43
  25. green-yellow-orange
  26. 920
  27. 5.2
  28. 720
  29. violet-black-red
  30. orange-brown-black
  31. orange-red-orange
  32. blue-violet-brown
  33. 73
  34. 8.7
  35. 0
  36. 480
  37. yellow-grey-black
  38. 4
  39. 3
  40. brown-violet-orange

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