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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 633 · 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, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands yellow, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
  4. 4.🌈 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
  5. 5.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 63000 Ω resistor? (a) blue-orange-yellow (b) orange-blue-orange (c) blue-orange-red (d) blue-orange-orange
  7. 7.🌈 A resistor has the colour bands green, red, brown. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) red-orange-yellow (b) orange-red-orange (c) red-orange-orange (d) red-orange-red
  9. 9.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) violet-brown-red (b) violet-brown-brown (c) brown-violet-red (d) violet-brown-orange
  12. 12.🌈 In the resistor colour code, which number does green stand for?
  13. 13.🌈 A resistor has the colour bands red, white, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) red-grey-brown (b) red-grey-black (c) grey-red-black (d) orange-grey-black
  15. 15.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) brown-white-black (b) white-white-brown (c) white-white-black (d) white-black-black
  17. 17.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5200 Ω resistor? (a) green-red-brown (b) green-red-orange (c) red-green-red (d) green-red-red
  19. 19.🌈 In the resistor colour code, which number does grey stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-brown (b) grey-red-brown (c) red-grey-red (d) red-grey-black
  21. 21.🌈 A resistor has the colour bands white, blue, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does black stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) grey-black-yellow (b) white-grey-orange (c) grey-black-orange (d) grey-black-red
  24. 24.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) green-red-orange (b) red-green-yellow (c) red-green-red (d) red-green-orange
  26. 26.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands white, violet, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27 Ω resistor? (a) violet-red-black (b) orange-violet-black (c) red-violet-brown (d) red-violet-black
  31. 31.🌈 In the resistor colour code, which number does red stand for?
  32. 32.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36000 Ω resistor? (a) orange-blue-red (b) orange-blue-yellow (c) orange-blue-orange (d) blue-orange-orange
  34. 34.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does yellow stand for?
  37. 37.🌈 A resistor has the colour bands white, green, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands orange, orange, brown. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9600 Ω resistor? (a) white-blue-orange (b) white-blue-brown (c) blue-white-red (d) white-blue-red

Answer key

  1. 730
  2. 440
  3. 26000
  4. the one nearest an end
  5. 9200
  6. blue-orange-orange
  7. 520
  8. red-orange-orange
  9. 50
  10. 920
  11. violet-brown-red
  12. 5
  13. 2.9
  14. red-grey-black
  15. 640
  16. white-white-black
  17. 15
  18. green-red-red
  19. 8
  20. red-grey-brown
  21. 96
  22. 0
  23. grey-black-orange
  24. 5 %
  25. red-green-orange
  26. 56
  27. 25
  28. 3.5
  29. 97
  30. red-violet-black
  31. 2
  32. 590
  33. orange-blue-orange
  34. 2
  35. 45000
  36. 4
  37. 95000
  38. 26
  39. 330
  40. white-blue-red

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