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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 587 · 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 green, red, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
  3. 3.🌈 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
  4. 4.🌈 In the resistor colour code, which number does brown stand for?
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  6. 6.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the widest gap (d) the one nearest an end
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68000 Ω resistor? (a) grey-blue-orange (b) blue-grey-red (c) blue-grey-orange (d) blue-grey-yellow
  8. 8.🌈 In the resistor colour code, which number does white stand for?
  9. 9.🌈 In the resistor colour code, which number does green stand for?
  10. 10.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does orange stand for?
  12. 12.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does black stand for?
  15. 15.🌈 A resistor has the colour bands blue, black, red. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does red stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) red-brown-red (b) brown-red-brown (c) brown-red-red (d) brown-red-orange
  18. 18.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does yellow stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36000 Ω resistor? (a) blue-orange-orange (b) orange-blue-orange (c) orange-blue-yellow (d) orange-blue-red
  22. 22.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77 Ω resistor? (a) violet-violet-black (b) violet-grey-black (c) violet-violet-brown (d) grey-violet-black
  24. 24.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 710 Ω resistor? (a) violet-brown-red (b) brown-violet-brown (c) violet-brown-brown (d) violet-brown-black
  26. 26.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does blue stand for?
  28. 28.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands yellow, white, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands violet, yellow, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) brown-white-red (b) brown-white-black (c) brown-white-brown (d) white-brown-brown
  34. 34.🌈 In the resistor colour code, which number does grey stand for?
  35. 35.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-black-black (b) red-black-brown (c) orange-red-black (d) red-black-black
  40. 40.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 52
  2. 260
  3. white-orange-red
  4. 1
  5. 5 %
  6. the one nearest an end
  7. blue-grey-orange
  8. 9
  9. 5
  10. 27
  11. 3
  12. 73
  13. 3900
  14. 0
  15. 6000
  16. 2
  17. brown-red-red
  18. 2500
  19. 54
  20. 4
  21. orange-blue-orange
  22. 41000
  23. violet-violet-black
  24. 4.4
  25. violet-brown-brown
  26. 26
  27. 6
  28. 51
  29. 230
  30. 4900
  31. 7400
  32. 6900
  33. brown-white-brown
  34. 8
  35. 740
  36. 2
  37. 37
  38. 590
  39. red-black-black
  40. 7.9

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