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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 318 · 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.

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  1. 1.🌈 A resistor has the colour bands blue, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the gold band (d) the one nearest an end
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-brown (b) red-orange-red (c) red-red-red (d) red-red-orange
  5. 5.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  7. 7.🌈 In the resistor colour code, which number does black stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 850 Ω resistor? (a) green-grey-brown (b) grey-green-red (c) grey-green-brown (d) grey-green-black
  9. 9.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does red stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6800 Ω resistor? (a) blue-grey-orange (b) grey-blue-red (c) blue-grey-red (d) blue-grey-brown
  13. 13.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does yellow stand for?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 130 Ω resistor? (a) brown-orange-black (b) orange-brown-brown (c) brown-orange-brown (d) brown-orange-red
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-black (b) red-grey-red (c) grey-red-brown (d) red-grey-brown
  17. 17.🌈 A resistor has the colour bands yellow, blue, orange. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91 Ω resistor? (a) white-brown-black (b) brown-brown-black (c) white-brown-brown (d) brown-white-black
  20. 20.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does orange stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8400 Ω resistor? (a) grey-yellow-orange (b) grey-yellow-brown (c) yellow-grey-red (d) grey-yellow-red
  24. 24.🌈 In the resistor colour code, which number does white stand for?
  25. 25.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-black-black (b) red-black-brown (c) red-black-black (d) orange-red-black
  28. 28.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) blue-red-yellow (b) red-blue-orange (c) blue-red-red (d) blue-red-orange
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 260 Ω resistor? (a) red-blue-black (b) blue-red-brown (c) red-blue-red (d) red-blue-brown
  31. 31.🌈 In the resistor colour code, which number does violet stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5000 Ω resistor? (a) green-black-orange (b) green-black-brown (c) green-black-red (d) blue-green-red
  33. 33.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands green, brown, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, red, black. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1900 Ω resistor? (a) white-brown-red (b) brown-white-brown (c) brown-white-red (d) brown-white-orange
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32 Ω resistor? (a) yellow-red-black (b) red-orange-black (c) orange-red-brown (d) orange-red-black

Answer key

  1. 630
  2. 9.8
  3. the one nearest an end
  4. red-red-red
  5. 780
  6. 5 %
  7. 0
  8. grey-green-brown
  9. 37
  10. 23
  11. 2
  12. blue-grey-red
  13. 43
  14. 4
  15. brown-orange-brown
  16. red-grey-brown
  17. 46000
  18. 9.6
  19. white-brown-black
  20. 82000
  21. 980
  22. 3
  23. grey-yellow-red
  24. 9
  25. 10000
  26. 17
  27. red-black-black
  28. 5.5
  29. blue-red-orange
  30. red-blue-brown
  31. 7
  32. green-black-red
  33. 18
  34. 81000
  35. 51000
  36. 2.2
  37. 100
  38. 42
  39. brown-white-red
  40. orange-red-black

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