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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 559 · 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 red, red, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) orange-brown-orange (b) orange-brown-brown (c) orange-brown-red (d) brown-orange-red
  3. 3.🌈 A resistor has the colour bands white, green, orange. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 350 Ω resistor? (a) orange-green-black (b) green-orange-brown (c) orange-green-brown (d) orange-green-red
  5. 5.🌈 In the resistor colour code, which number does grey stand for?
  6. 6.🌈 In the resistor colour code, which number does brown stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) brown-red-brown (b) brown-red-red (c) red-brown-red (d) brown-red-orange
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 50 % (d) 0 %
  9. 9.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the widest gap (d) the gold band
  10. 10.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) white-red-black (b) grey-red-brown (c) red-grey-black (d) grey-red-black
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1600 Ω resistor? (a) blue-brown-red (b) brown-blue-orange (c) brown-blue-red (d) brown-blue-brown
  13. 13.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 810 Ω resistor? (a) brown-grey-brown (b) grey-brown-brown (c) grey-brown-black (d) grey-brown-red
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76000 Ω resistor? (a) violet-blue-red (b) violet-blue-orange (c) violet-blue-yellow (d) blue-violet-orange
  18. 18.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-red (b) red-red-brown (c) red-orange-brown (d) red-red-black
  21. 21.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does black stand for?
  26. 26.🌈 A resistor has the colour bands green, grey, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands green, grey, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands yellow, white, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands grey, green, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does red stand for?
  34. 34.🌈 In the resistor colour code, which number does green stand for?
  35. 35.🌈 A resistor has the colour bands yellow, green, red. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8400 Ω resistor? (a) grey-yellow-orange (b) grey-yellow-red (c) grey-yellow-brown (d) yellow-grey-red
  37. 37.🌈 A resistor has the colour bands white, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  39. 39.🌈 In the resistor colour code, which number does white stand for?
  40. 40.🌈 In the resistor colour code, which number does orange stand for?

Answer key

  1. 22
  2. orange-brown-red
  3. 95000
  4. orange-green-brown
  5. 8
  6. 1
  7. brown-red-red
  8. 5 %
  9. the one nearest an end
  10. 3700
  11. grey-red-black
  12. brown-blue-red
  13. 670
  14. 7.7
  15. 3.9
  16. grey-brown-brown
  17. violet-blue-orange
  18. 8000
  19. 68
  20. red-red-brown
  21. 300
  22. 580
  23. 6900
  24. 25000
  25. 0
  26. 58000
  27. 58
  28. 490
  29. 850
  30. 90
  31. 2.6
  32. 24000
  33. 2
  34. 5
  35. 4500
  36. grey-yellow-red
  37. 980
  38. 20
  39. 9
  40. 3

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