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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 635 · 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, orange, orange. What is its value (in ohms)?
  2. 2.🌈 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
  3. 3.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  7. 7.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 440 Ω resistor? (a) yellow-yellow-black (b) yellow-green-brown (c) yellow-yellow-red (d) yellow-yellow-brown
  9. 9.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does red stand for?
  11. 11.🌈 A resistor has the colour bands green, green, red. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does yellow stand for?
  13. 13.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-orange (b) red-red-brown (c) red-red-red (d) red-orange-red
  15. 15.🌈 In the resistor colour code, which number does violet stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26000 Ω resistor? (a) red-blue-red (b) blue-red-orange (c) red-blue-orange (d) red-blue-yellow
  17. 17.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) brown-green-black (b) green-brown-brown (c) blue-brown-black (d) green-brown-black
  20. 20.🌈 In the resistor colour code, which number does green stand for?
  21. 21.🌈 In the resistor colour code, which number does grey stand for?
  22. 22.🌈 In the resistor colour code, which number does black stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-black-black (b) red-black-brown (c) orange-red-black (d) red-black-black
  24. 24.🌈 In the resistor colour code, which number does brown stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64 Ω resistor? (a) violet-yellow-black (b) yellow-blue-black (c) blue-yellow-brown (d) blue-yellow-black
  26. 26.🌈 A resistor has the colour bands orange, yellow, black. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does orange stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) red-grey-black (b) brown-grey-black (c) grey-brown-black (d) brown-grey-brown
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1900 Ω resistor? (a) white-brown-red (b) brown-white-orange (c) brown-white-red (d) brown-white-brown
  30. 30.🌈 A resistor has the colour bands brown, white, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68 Ω resistor? (a) blue-grey-brown (b) blue-grey-black (c) violet-grey-black (d) grey-blue-black
  36. 36.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40000 Ω resistor? (a) green-yellow-orange (b) yellow-black-red (c) yellow-black-yellow (d) yellow-black-orange
  38. 38.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45000 Ω resistor? (a) yellow-green-yellow (b) green-yellow-orange (c) yellow-green-orange (d) yellow-green-red

Answer key

  1. 63000
  2. the one nearest an end
  3. 250
  4. 1.3
  5. 5700
  6. 5 %
  7. 190
  8. yellow-yellow-brown
  9. 98000
  10. 2
  11. 5500
  12. 4
  13. 830
  14. red-red-red
  15. 7
  16. red-blue-orange
  17. 3900
  18. 64
  19. green-brown-black
  20. 5
  21. 8
  22. 0
  23. red-black-black
  24. 1
  25. blue-yellow-black
  26. 34
  27. 3
  28. brown-grey-black
  29. brown-white-red
  30. 19
  31. 690
  32. 7.1
  33. 11000
  34. 4800
  35. blue-grey-black
  36. 500
  37. yellow-black-orange
  38. 8.1
  39. 110
  40. yellow-green-orange

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