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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 948 · 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.🌈 In the resistor colour code, which number does blue stand for?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91000 Ω resistor? (a) white-brown-red (b) white-brown-orange (c) brown-white-orange (d) white-brown-yellow
  4. 4.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands violet, green, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) violet-red-orange (b) violet-red-red (c) violet-red-brown (d) red-violet-red
  8. 8.🌈 A resistor has the colour bands grey, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32 Ω resistor? (a) orange-red-black (b) orange-red-brown (c) red-orange-black (d) yellow-red-black
  10. 10.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4200 Ω resistor? (a) red-yellow-red (b) yellow-red-orange (c) yellow-red-brown (d) yellow-red-red
  12. 12.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 660 Ω resistor? (a) blue-blue-red (b) blue-blue-brown (c) blue-blue-black (d) blue-violet-brown
  15. 15.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
  19. 19.🌈 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
  20. 20.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does yellow stand for?
  23. 23.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) yellow-black-black (b) orange-black-brown (c) yellow-orange-black (d) orange-black-black
  25. 25.🌈 In the resistor colour code, which number does grey stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-red (b) red-brown-brown (c) brown-red-black (d) brown-red-brown
  27. 27.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 In the resistor colour code, which number does black stand for?
  29. 29.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does white stand for?
  31. 31.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does red stand for?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2900 Ω resistor? (a) red-white-orange (b) red-white-brown (c) white-red-red (d) red-white-red
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-black (b) grey-violet-red (c) grey-violet-brown (d) violet-grey-brown
  35. 35.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3500 Ω resistor? (a) green-orange-red (b) orange-green-orange (c) orange-green-brown (d) orange-green-red
  39. 39.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-black (b) orange-brown-black (c) red-brown-brown (d) brown-red-black

Answer key

  1. 6
  2. 5 %
  3. white-brown-orange
  4. 8100
  5. 750
  6. the one nearest an end
  7. violet-red-red
  8. 880
  9. orange-red-black
  10. 16
  11. yellow-red-red
  12. 3.4
  13. 35000
  14. blue-blue-brown
  15. 40000
  16. 870
  17. 2.1
  18. 24
  19. brown-white-brown
  20. 72
  21. 670
  22. 4
  23. 3
  24. orange-black-black
  25. 8
  26. brown-red-brown
  27. 22
  28. 0
  29. 14
  30. 9
  31. 120
  32. 2
  33. red-white-red
  34. grey-violet-brown
  35. 540
  36. 63000
  37. 500
  38. orange-green-red
  39. 10000
  40. red-brown-black

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