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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 454 · 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.

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  1. 1.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does black stand for?
  3. 3.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) brown-blue-brown (b) blue-brown-black (c) red-blue-black (d) brown-blue-black
  5. 5.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 410 Ω resistor? (a) yellow-brown-black (b) yellow-brown-brown (c) brown-yellow-brown (d) yellow-brown-red
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  8. 8.🌈 In the resistor colour code, which number does red stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7400 Ω resistor? (a) yellow-violet-red (b) violet-yellow-orange (c) violet-yellow-red (d) violet-yellow-brown
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) yellow-violet-brown (b) green-violet-black (c) yellow-violet-black (d) violet-yellow-black
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) brown-blue-red (b) brown-blue-yellow (c) blue-brown-orange (d) brown-blue-orange
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) green-brown-brown (b) brown-green-black (c) blue-brown-black (d) green-brown-black
  13. 13.🌈 In the resistor colour code, which number does blue stand for?
  14. 14.🌈 A resistor has the colour bands blue, orange, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 17000 Ω resistor? (a) violet-brown-orange (b) brown-violet-orange (c) brown-violet-yellow (d) brown-violet-red
  19. 19.🌈 In the resistor colour code, which number does white stand for?
  20. 20.🌈 In the resistor colour code, which number does orange stand for?
  21. 21.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5500 Ω resistor? (a) green-green-orange (b) green-blue-red (c) green-green-brown (d) green-green-red
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24 Ω resistor? (a) red-yellow-brown (b) orange-yellow-black (c) red-yellow-black (d) yellow-red-black
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 810 Ω resistor? (a) grey-brown-black (b) grey-brown-brown (c) grey-brown-red (d) brown-grey-brown
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56000 Ω resistor? (a) green-blue-orange (b) green-blue-yellow (c) blue-green-orange (d) green-blue-red
  33. 33.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does yellow stand for?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 17 Ω resistor? (a) brown-violet-black (b) brown-violet-brown (c) violet-brown-black (d) red-violet-black
  36. 36.🌈 A resistor has the colour bands yellow, green, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11 Ω resistor? (a) brown-red-black (b) brown-brown-black (c) red-brown-black (d) brown-brown-brown
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53 Ω resistor? (a) green-orange-brown (b) blue-orange-black (c) orange-green-black (d) green-orange-black
  39. 39.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?

Answer key

  1. 6200
  2. 0
  3. 68
  4. brown-blue-black
  5. the one nearest an end
  6. yellow-brown-brown
  7. 5 %
  8. 2
  9. violet-yellow-red
  10. yellow-violet-black
  11. brown-blue-orange
  12. green-brown-black
  13. 6
  14. 630
  15. 590
  16. 83
  17. 490
  18. brown-violet-orange
  19. 9
  20. 3
  21. 22000
  22. 2900
  23. 39
  24. 8.6
  25. 12
  26. 7.1
  27. 130
  28. 86
  29. green-green-red
  30. red-yellow-black
  31. grey-brown-brown
  32. green-blue-orange
  33. 80
  34. 4
  35. brown-violet-black
  36. 4.5
  37. brown-brown-black
  38. green-orange-black
  39. 99000
  40. 5100

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