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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 327 · 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 brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) red-black-black (b) orange-red-black (c) orange-black-black (d) red-black-brown
  5. 5.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  6. 6.🌈 A resistor has the colour bands violet, orange, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does grey stand for?
  8. 8.🌈 In the resistor colour code, which number does brown stand for?
  9. 9.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  11. 11.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands blue, green, orange. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4200 Ω resistor? (a) yellow-red-brown (b) red-yellow-red (c) yellow-red-red (d) yellow-red-orange
  14. 14.🌈 In the resistor colour code, which number does white stand for?
  15. 15.🌈 A resistor has the colour bands orange, blue, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does red stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) grey-brown-red (b) brown-grey-brown (c) brown-grey-orange (d) brown-grey-red
  19. 19.🌈 In the resistor colour code, which number does green stand for?
  20. 20.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) green-yellow-black (b) green-black-black (c) yellow-black-black (d) yellow-black-brown
  22. 22.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) violet-brown-orange (b) violet-brown-brown (c) violet-brown-red (d) brown-violet-red
  24. 24.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands orange, orange, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 260 Ω resistor? (a) red-blue-black (b) red-blue-red (c) red-blue-brown (d) blue-red-brown
  30. 30.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 310 Ω resistor? (a) brown-orange-brown (b) orange-brown-brown (c) orange-brown-black (d) orange-brown-red
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-brown (b) red-red-orange (c) red-red-red (d) red-orange-red
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19000 Ω resistor? (a) white-brown-orange (b) brown-white-orange (c) brown-white-red (d) brown-white-yellow
  35. 35.🌈 In the resistor colour code, which number does blue stand for?
  36. 36.🌈 A resistor has the colour bands yellow, green, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands white, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands white, yellow, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 1.8
  2. 52
  3. 970
  4. red-black-black
  5. the one nearest an end
  6. 73
  7. 8
  8. 1
  9. 53000
  10. 5 %
  11. 18000
  12. 65000
  13. yellow-red-red
  14. 9
  15. 36
  16. 41
  17. 2
  18. brown-grey-red
  19. 5
  20. 61000
  21. yellow-black-black
  22. 40000
  23. violet-brown-red
  24. 220
  25. 6.7
  26. 33000
  27. 52000
  28. 7.2
  29. red-blue-brown
  30. 24
  31. 50000
  32. orange-brown-brown
  33. red-red-red
  34. brown-white-orange
  35. 6
  36. 45
  37. 600
  38. 600
  39. 980
  40. 94

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