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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 730 · 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 gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  2. 2.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
  3. 3.🌈 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
  4. 4.🌈 In the resistor colour code, which number does yellow stand for?
  5. 5.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 In the resistor colour code, which number does white stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 130 Ω resistor? (a) brown-orange-black (b) brown-orange-brown (c) brown-orange-red (d) orange-brown-brown
  8. 8.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does brown stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) brown-red-orange (b) red-brown-orange (c) red-brown-yellow (d) red-brown-red
  13. 13.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) violet-blue-black (b) violet-blue-brown (c) blue-violet-black (d) grey-blue-black
  15. 15.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) red-violet-red (b) red-violet-orange (c) red-violet-yellow (d) violet-red-orange
  17. 17.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1400 Ω resistor? (a) brown-yellow-red (b) yellow-brown-red (c) brown-yellow-brown (d) brown-yellow-orange
  20. 20.🌈 In the resistor colour code, which number does green stand for?
  21. 21.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands brown, white, orange. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does red stand for?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) brown-white-black (b) white-black-brown (c) brown-black-black (d) white-black-black
  25. 25.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) blue-green-black (b) violet-green-black (c) blue-green-brown (d) green-blue-black
  27. 27.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands yellow, green, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does black stand for?
  32. 32.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8600 Ω resistor? (a) grey-blue-red (b) grey-blue-brown (c) blue-grey-red (d) grey-blue-orange
  36. 36.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2900 Ω resistor? (a) red-white-red (b) red-white-brown (c) red-white-orange (d) white-red-red
  38. 38.🌈 In the resistor colour code, which number does grey stand for?
  39. 39.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 5 %
  2. 3100
  3. the one nearest an end
  4. 4
  5. 8
  6. 9
  7. brown-orange-brown
  8. 77
  9. 9
  10. 84
  11. 1
  12. red-brown-orange
  13. 39000
  14. violet-blue-black
  15. 63000
  16. red-violet-orange
  17. 40000
  18. 600
  19. brown-yellow-red
  20. 5
  21. 66
  22. 19000
  23. 2
  24. white-black-black
  25. 2.7
  26. blue-green-black
  27. 580
  28. 4.5
  29. 2.8
  30. 670
  31. 0
  32. 250
  33. 760
  34. 30
  35. grey-blue-red
  36. 16
  37. red-white-red
  38. 8
  39. 9200
  40. 3.2

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