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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 345 · 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 orange, black, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) brown-grey-red (b) grey-brown-brown (c) brown-grey-black (d) brown-grey-brown
  3. 3.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1300 Ω resistor? (a) brown-orange-brown (b) brown-orange-red (c) orange-brown-red (d) brown-orange-orange
  6. 6.🌈 In the resistor colour code, which number does green stand for?
  7. 7.🌈 In the resistor colour code, which number does red stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12000 Ω resistor? (a) red-brown-orange (b) brown-red-orange (c) brown-red-yellow (d) brown-red-red
  9. 9.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does white stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2900 Ω resistor? (a) red-white-red (b) red-white-orange (c) white-red-red (d) red-white-brown
  14. 14.🌈 A resistor has the colour bands grey, orange, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does violet stand for?
  17. 17.🌈 In the resistor colour code, which number does blue stand for?
  18. 18.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) violet-red-brown (b) red-violet-black (c) red-violet-red (d) red-violet-brown
  22. 22.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  23. 23.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands yellow, violet, orange. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does grey stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) green-orange-black (b) yellow-orange-black (c) yellow-orange-brown (d) orange-yellow-black
  27. 27.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands green, blue, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands blue, blue, brown. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64000 Ω resistor? (a) yellow-blue-orange (b) blue-yellow-orange (c) blue-yellow-yellow (d) blue-yellow-red
  33. 33.🌈 A resistor has the colour bands orange, yellow, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does yellow stand for?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11000 Ω resistor? (a) brown-brown-orange (b) brown-brown-red (c) brown-brown-yellow (d) brown-red-orange
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-yellow (b) red-black-orange (c) red-black-red (d) orange-red-orange
  38. 38.🌈 A resistor has the colour bands white, grey, red. What is its value (in ohms)?
  39. 39.🌈 In the resistor colour code, which number does black stand for?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86 Ω resistor? (a) white-blue-black (b) blue-grey-black (c) grey-blue-brown (d) grey-blue-black

Answer key

  1. 3
  2. brown-grey-brown
  3. 7.1
  4. the one nearest an end
  5. brown-orange-red
  6. 5
  7. 2
  8. brown-red-orange
  9. 6.1
  10. 36
  11. 7100
  12. 9
  13. red-white-red
  14. 83
  15. 90000
  16. 7
  17. 6
  18. 10
  19. 210
  20. 5.9
  21. red-violet-brown
  22. 5 %
  23. 5.4
  24. 47000
  25. 8
  26. yellow-orange-black
  27. 200
  28. 1200
  29. 560
  30. 580
  31. 660
  32. blue-yellow-orange
  33. 34
  34. 8400
  35. 4
  36. brown-brown-orange
  37. red-black-orange
  38. 9800
  39. 0
  40. grey-blue-black

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