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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 25 · 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.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 In the resistor colour code, which number does violet stand for?
  3. 3.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  4. 4.🌈 A resistor has the colour bands violet, white, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands blue, white, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands grey, green, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands brown, white, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does green stand for?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 25 % (d) 0 %
  11. 11.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9300 Ω resistor? (a) orange-white-red (b) white-orange-orange (c) white-orange-brown (d) white-orange-red
  13. 13.🌈 In the resistor colour code, which number does blue stand for?
  14. 14.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 17000 Ω resistor? (a) violet-brown-orange (b) brown-violet-orange (c) brown-violet-red (d) brown-violet-yellow
  17. 17.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands grey, blue, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 In the resistor colour code, which number does orange stand for?
  22. 22.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does white stand for?
  24. 24.🌈 A resistor has the colour bands white, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does grey stand for?
  26. 26.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 530 Ω resistor? (a) green-orange-brown (b) orange-green-brown (c) green-orange-red (d) green-orange-black
  30. 30.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands orange, yellow, black. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does red stand for?
  33. 33.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does brown stand for?
  36. 36.🌈 In the resistor colour code, which number does black stand for?
  37. 37.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56 Ω resistor? (a) green-blue-brown (b) blue-green-black (c) green-blue-black (d) blue-blue-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38000 Ω resistor? (a) orange-grey-red (b) orange-grey-orange (c) grey-orange-orange (d) orange-grey-yellow
  40. 40.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 1.8
  2. 7
  3. the one nearest an end
  4. 790
  5. 69000
  6. 850
  7. 19
  8. 43
  9. 5
  10. 5 %
  11. 38
  12. white-orange-red
  13. 6
  14. 890
  15. 3.1
  16. brown-violet-orange
  17. 61
  18. 8600
  19. 6400
  20. 280
  21. 3
  22. 3300
  23. 9
  24. 940
  25. 8
  26. 40000
  27. 2900
  28. 980
  29. green-orange-brown
  30. 2
  31. 34
  32. 2
  33. 2.4
  34. 280
  35. 1
  36. 0
  37. 10000
  38. green-blue-black
  39. orange-grey-orange
  40. 36

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