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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 499 · 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 white, green, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 17 Ω resistor? (a) brown-violet-black (b) violet-brown-black (c) brown-violet-brown (d) red-violet-black
  4. 4.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  5. 5.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands grey, blue, red. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56000 Ω resistor? (a) green-blue-yellow (b) blue-green-orange (c) green-blue-orange (d) green-blue-red
  9. 9.🌈 In the resistor colour code, which number does grey stand for?
  10. 10.🌈 In the resistor colour code, which number does brown stand for?
  11. 11.🌈 A resistor has the colour bands yellow, white, brown. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74 Ω resistor? (a) yellow-violet-black (b) violet-yellow-black (c) violet-yellow-brown (d) grey-yellow-black
  13. 13.🌈 In the resistor colour code, which number does white stand for?
  14. 14.🌈 In the resistor colour code, which number does blue stand for?
  15. 15.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-red (b) red-orange-red (c) red-red-brown (d) red-red-orange
  17. 17.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-brown (b) orange-brown-black (c) brown-red-black (d) red-brown-black
  19. 19.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
  20. 20.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  21. 21.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does violet stand for?
  23. 23.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-black-red (b) white-white-brown (c) white-white-orange (d) white-white-red
  26. 26.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39 Ω resistor? (a) white-orange-black (b) orange-white-brown (c) yellow-white-black (d) orange-white-black
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8100 Ω resistor? (a) brown-grey-red (b) grey-brown-orange (c) grey-brown-red (d) grey-brown-brown
  29. 29.🌈 In the resistor colour code, which number does yellow stand for?
  30. 30.🌈 A resistor has the colour bands green, blue, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  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 760 Ω resistor? (a) blue-violet-brown (b) violet-blue-brown (c) violet-blue-black (d) violet-blue-red
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14000 Ω resistor? (a) yellow-brown-orange (b) brown-yellow-orange (c) brown-yellow-red (d) brown-yellow-yellow
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) blue-green-brown (b) violet-green-black (c) green-blue-black (d) blue-green-black
  36. 36.🌈 A resistor has the colour bands white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands red, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 In the resistor colour code, which number does black stand for?
  40. 40.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 95
  2. 170
  3. brown-violet-black
  4. the one nearest an end
  5. 85000
  6. 110
  7. 8600
  8. green-blue-orange
  9. 8
  10. 1
  11. 490
  12. violet-yellow-black
  13. 9
  14. 6
  15. 92
  16. red-red-red
  17. 12
  18. red-brown-black
  19. 750
  20. 5 %
  21. 1800
  22. 7
  23. 18
  24. 2.3
  25. white-white-red
  26. 2.2
  27. orange-white-black
  28. grey-brown-red
  29. 4
  30. 56
  31. 8.2
  32. 2
  33. violet-blue-brown
  34. brown-yellow-orange
  35. blue-green-black
  36. 970
  37. 5000
  38. 260
  39. 0
  40. 3.6

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