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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 317 · 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 brown, yellow, red. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands brown, white, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does red stand for?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  7. 7.🌈 In the resistor colour code, which number does blue stand for?
  8. 8.🌈 A resistor has the colour bands orange, red, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 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
  10. 10.🌈 In the resistor colour code, which number does grey stand for?
  11. 11.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) red-grey-yellow (b) red-grey-orange (c) grey-red-orange (d) red-grey-red
  14. 14.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does brown stand for?
  16. 16.🌈 In the resistor colour code, which number does yellow stand for?
  17. 17.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91 Ω resistor? (a) brown-brown-black (b) white-brown-brown (c) brown-white-black (d) white-brown-black
  21. 21.🌈 A resistor has the colour bands white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does black stand for?
  23. 23.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands grey, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3500 Ω resistor? (a) orange-green-brown (b) green-orange-red (c) orange-green-red (d) orange-green-orange
  26. 26.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does violet stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 260 Ω resistor? (a) blue-red-brown (b) red-blue-red (c) red-blue-brown (d) red-blue-black
  29. 29.🌈 A resistor has the colour bands yellow, red, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands blue, green, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands blue, brown, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands brown, green, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 840 Ω resistor? (a) grey-yellow-brown (b) yellow-grey-brown (c) grey-yellow-black (d) grey-yellow-red
  38. 38.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) grey-brown-brown (b) brown-grey-black (c) grey-brown-black (d) white-brown-black

Answer key

  1. 490
  2. 1400
  3. 19
  4. 600
  5. 2
  6. 5 %
  7. 6
  8. 32
  9. the one nearest an end
  10. 8
  11. 1000
  12. 8.9
  13. red-grey-orange
  14. 710
  15. 1
  16. 4
  17. 590
  18. 41
  19. 61
  20. white-brown-black
  21. 970
  22. 0
  23. 85
  24. 880
  25. orange-green-red
  26. 300
  27. 7
  28. red-blue-brown
  29. 420
  30. 6.7
  31. 51
  32. 65000
  33. 61
  34. 7.4
  35. 2.4
  36. 150
  37. grey-yellow-brown
  38. 5.9
  39. 38000
  40. grey-brown-black

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