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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 194 · 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 band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  2. 2.🌈 In the resistor colour code, which number does red stand for?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  4. 4.🌈 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
  5. 5.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands green, orange, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does white stand for?
  8. 8.🌈 In the resistor colour code, which number does orange stand for?
  9. 9.🌈 A resistor has the colour bands grey, violet, black. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1700 Ω resistor? (a) brown-violet-brown (b) brown-violet-red (c) brown-violet-orange (d) violet-brown-red
  11. 11.🌈 In the resistor colour code, which number does yellow stand for?
  12. 12.🌈 In the resistor colour code, which number does black stand for?
  13. 13.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands white, orange, orange. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands orange, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does blue stand for?
  22. 22.🌈 In the resistor colour code, which number does green stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-orange (c) red-orange-red (d) red-orange-yellow
  24. 24.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) violet-white-black (b) violet-white-brown (c) grey-white-black (d) white-violet-black
  26. 26.🌈 In the resistor colour code, which number does brown stand for?
  27. 27.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 440 Ω resistor? (a) yellow-green-brown (b) yellow-yellow-black (c) yellow-yellow-brown (d) yellow-yellow-red
  30. 30.🌈 In the resistor colour code, which number does grey stand for?
  31. 31.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9400 Ω resistor? (a) yellow-white-red (b) white-yellow-orange (c) white-yellow-red (d) white-yellow-brown
  34. 34.🌈 A resistor has the colour bands red, grey, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) grey-orange-black (b) orange-grey-brown (c) yellow-grey-black (d) orange-grey-black
  36. 36.🌈 A resistor has the colour bands green, violet, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands brown, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-violet-black (b) violet-black-brown (c) violet-black-black (d) grey-black-black
  39. 39.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. the one nearest an end
  2. 2
  3. 5 %
  4. brown-red-brown
  5. 22000
  6. 5.3
  7. 9
  8. 3
  9. 87
  10. brown-violet-red
  11. 4
  12. 0
  13. 68
  14. 6.7
  15. 7.4
  16. 800
  17. 93000
  18. 310
  19. 82
  20. 35000
  21. 6
  22. 5
  23. red-orange-orange
  24. 6.5
  25. violet-white-black
  26. 1
  27. 590
  28. 96
  29. yellow-yellow-brown
  30. 8
  31. 88
  32. 99
  33. white-yellow-red
  34. 28
  35. orange-grey-black
  36. 5.7
  37. 130
  38. violet-black-black
  39. 4.8
  40. 27

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