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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 356 · 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 orange, green, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands red, white, orange. What is its value (in ohms)?
  3. 3.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
  4. 4.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does grey stand for?
  6. 6.🌈 In the resistor colour code, which number does black stand for?
  7. 7.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 5 % (d) 0 %
  9. 9.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands violet, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands orange, yellow, black. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) yellow-black-black (b) green-yellow-black (c) yellow-black-brown (d) green-black-black
  17. 17.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands violet, white, orange. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does red stand for?
  21. 21.🌈 A resistor has the colour bands yellow, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands green, orange, brown. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7400 Ω resistor? (a) yellow-violet-red (b) violet-yellow-brown (c) violet-yellow-orange (d) violet-yellow-red
  27. 27.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47000 Ω resistor? (a) yellow-violet-yellow (b) violet-yellow-orange (c) yellow-violet-red (d) yellow-violet-orange
  29. 29.🌈 In the resistor colour code, which number does violet stand for?
  30. 30.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 820 Ω resistor? (a) grey-red-black (b) red-grey-brown (c) grey-red-brown (d) grey-red-red
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8700 Ω resistor? (a) grey-violet-orange (b) violet-grey-red (c) grey-violet-brown (d) grey-violet-red
  33. 33.🌈 A resistor has the colour bands blue, red, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 In the resistor colour code, which number does brown stand for?
  35. 35.🌈 In the resistor colour code, which number does orange stand for?
  36. 36.🌈 A resistor has the colour bands grey, green, brown. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92000 Ω resistor? (a) white-red-orange (b) white-red-yellow (c) white-red-red (d) red-white-orange
  38. 38.🌈 In the resistor colour code, which number does yellow stand for?
  39. 39.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83000 Ω resistor? (a) grey-orange-yellow (b) grey-orange-red (c) orange-grey-orange (d) grey-orange-orange

Answer key

  1. 3.5
  2. 29000
  3. the one nearest an end
  4. 20
  5. 8
  6. 0
  7. 780
  8. 5 %
  9. 18
  10. 38000
  11. 19
  12. 7.6
  13. 41000
  14. 770
  15. 34
  16. yellow-black-black
  17. 23
  18. 340
  19. 79000
  20. 2
  21. 440
  22. 8.5
  23. 5
  24. 2.7
  25. 530
  26. violet-yellow-red
  27. 390
  28. yellow-violet-orange
  29. 7
  30. 540
  31. grey-red-brown
  32. grey-violet-red
  33. 62
  34. 1
  35. 3
  36. 850
  37. white-red-orange
  38. 4
  39. 70
  40. grey-orange-orange

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