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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 649 · 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 violet, grey, red. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
  4. 4.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84000 Ω resistor? (a) grey-yellow-red (b) grey-yellow-yellow (c) grey-yellow-orange (d) yellow-grey-orange
  6. 6.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  7. 7.🌈 In the resistor colour code, which number does white stand for?
  8. 8.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does grey stand for?
  10. 10.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does orange stand for?
  13. 13.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does blue stand for?
  15. 15.🌈 In the resistor colour code, which number does red stand for?
  16. 16.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15 Ω resistor? (a) green-brown-black (b) brown-green-brown (c) red-green-black (d) brown-green-black
  22. 22.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, violet, red. 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 grey, red, black. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does brown stand for?
  28. 28.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53000 Ω resistor? (a) orange-green-orange (b) green-orange-red (c) green-orange-yellow (d) green-orange-orange
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) red-brown-orange (b) brown-red-red (c) red-brown-brown (d) red-brown-red
  31. 31.🌈 A resistor has the colour bands orange, orange, brown. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93000 Ω resistor? (a) white-orange-yellow (b) white-orange-red (c) orange-white-orange (d) white-orange-orange
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 670 Ω resistor? (a) blue-violet-black (b) blue-violet-red (c) blue-violet-brown (d) violet-blue-brown
  34. 34.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 400 Ω resistor? (a) green-yellow-brown (b) yellow-black-brown (c) yellow-black-red (d) yellow-black-black
  36. 36.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) green-red-black (b) orange-green-black (c) red-green-brown (d) red-green-black

Answer key

  1. 7800
  2. 8100
  3. 5 %
  4. 8200
  5. grey-yellow-orange
  6. the one nearest an end
  7. 9
  8. 6.8
  9. 8
  10. 820
  11. 12
  12. 3
  13. 3.2
  14. 6
  15. 2
  16. 15000
  17. 62000
  18. 410
  19. 3400
  20. 390
  21. brown-green-black
  22. 20
  23. 2500
  24. 1700
  25. 0
  26. 82
  27. 1
  28. 600
  29. green-orange-orange
  30. red-brown-red
  31. 330
  32. white-orange-orange
  33. blue-violet-brown
  34. 14000
  35. yellow-black-brown
  36. 4.4
  37. 9.6
  38. 690
  39. 2.1
  40. red-green-black

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