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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 106 · 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, red, black. What is its value (in ohms)?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 25 % (d) 50 %
  3. 3.🌈 A resistor has the colour bands violet, green, black. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does violet stand for?
  5. 5.🌈 In the resistor colour code, which number does yellow stand for?
  6. 6.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  7. 7.🌈 In the resistor colour code, which number does white stand for?
  8. 8.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-brown (b) red-orange-red (c) red-red-red (d) red-red-orange
  11. 11.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 320 Ω resistor? (a) red-orange-brown (b) orange-red-red (c) orange-red-brown (d) orange-red-black
  13. 13.🌈 In the resistor colour code, which number does orange stand for?
  14. 14.🌈 In the resistor colour code, which number does blue stand for?
  15. 15.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 310 Ω resistor? (a) orange-brown-black (b) orange-brown-brown (c) orange-brown-red (d) brown-orange-brown
  22. 22.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does grey stand for?
  26. 26.🌈 A resistor has the colour bands blue, grey, red. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) brown-blue-orange (b) brown-blue-yellow (c) blue-brown-orange (d) brown-blue-red
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-black (b) red-brown-brown (c) orange-brown-black (d) brown-red-black
  29. 29.🌈 A resistor has the colour bands green, blue, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands violet, green, orange. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 490 Ω resistor? (a) white-yellow-brown (b) yellow-white-red (c) yellow-white-black (d) yellow-white-brown
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) brown-green-orange (b) brown-green-red (c) brown-green-yellow (d) green-brown-orange
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 830 Ω resistor? (a) grey-orange-brown (b) grey-orange-black (c) orange-grey-brown (d) grey-orange-red
  34. 34.🌈 A resistor has the colour bands white, blue, brown. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does brown stand for?
  36. 36.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-red (b) orange-red-brown (c) red-orange-brown (d) red-orange-black
  38. 38.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) red-brown-black (b) brown-black-black (c) red-black-black (d) brown-black-brown
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54 Ω resistor? (a) blue-yellow-black (b) yellow-green-black (c) green-yellow-brown (d) green-yellow-black

Answer key

  1. 92
  2. 5 %
  3. 75
  4. 7
  5. 4
  6. the one nearest an end
  7. 9
  8. 2.1
  9. 290
  10. red-red-red
  11. 390
  12. orange-red-brown
  13. 3
  14. 6
  15. 150
  16. 80000
  17. 41
  18. 23
  19. 2.6
  20. 690
  21. orange-brown-brown
  22. 360
  23. 27
  24. 33
  25. 8
  26. 6800
  27. brown-blue-orange
  28. red-brown-black
  29. 5600
  30. 75000
  31. yellow-white-brown
  32. brown-green-orange
  33. grey-orange-brown
  34. 960
  35. 1
  36. 44
  37. red-orange-brown
  38. 24000
  39. brown-black-black
  40. green-yellow-black

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