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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 532 · 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 yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-yellow (c) red-orange-red (d) red-orange-orange
  4. 4.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  5. 5.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  7. 7.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 In the resistor colour code, which number does violet stand for?
  9. 9.🌈 In the resistor colour code, which number does red stand for?
  10. 10.🌈 In the resistor colour code, which number does green stand for?
  11. 11.🌈 In the resistor colour code, which number does blue stand for?
  12. 12.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands white, red, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does orange stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) brown-black-orange (b) brown-black-red (c) red-brown-orange (d) brown-black-yellow
  18. 18.🌈 A resistor has the colour bands orange, red, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands green, blue, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does white stand for?
  24. 24.🌈 In the resistor colour code, which number does yellow stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4500 Ω resistor? (a) yellow-green-red (b) yellow-green-orange (c) yellow-green-brown (d) green-yellow-red
  26. 26.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands grey, blue, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-red (b) green-red-red (c) red-green-brown (d) red-green-orange
  32. 32.🌈 A resistor has the colour bands white, white, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands red, grey, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 In the resistor colour code, which number does black stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59 Ω resistor? (a) blue-white-black (b) green-white-brown (c) green-white-black (d) white-green-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24000 Ω resistor? (a) red-yellow-yellow (b) red-yellow-red (c) yellow-red-orange (d) red-yellow-orange
  40. 40.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?

Answer key

  1. 490
  2. 36
  3. red-orange-orange
  4. the one nearest an end
  5. 730
  6. 5 %
  7. 1
  8. 7
  9. 2
  10. 5
  11. 6
  12. 72000
  13. 28000
  14. 1700
  15. 92
  16. 3
  17. brown-black-orange
  18. 32
  19. 52
  20. 20
  21. 5.6
  22. 12
  23. 9
  24. 4
  25. yellow-green-red
  26. 10
  27. 6200
  28. 86000
  29. 3.3
  30. 3100
  31. red-green-red
  32. 990
  33. 28
  34. 3.1
  35. 88
  36. 2.1
  37. 0
  38. green-white-black
  39. red-yellow-orange
  40. 16

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