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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 221 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🌈 In the resistor colour code, which number does brown stand for?
  2. 2.🌈 In the resistor colour code, which number does black stand for?
  3. 3.🌈 In the resistor colour code, which number does grey stand for?
  4. 4.🌈 A resistor has the colour bands orange, orange, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  7. 7.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) red-orange-orange (b) red-orange-brown (c) orange-red-red (d) red-orange-red
  9. 9.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
  11. 11.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) orange-white-brown (b) white-orange-red (c) white-orange-brown (d) white-orange-black
  13. 13.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands orange, yellow, brown. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does white stand for?
  16. 16.🌈 A resistor has the colour bands blue, white, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does violet stand for?
  18. 18.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 In the resistor colour code, which number does green stand for?
  21. 21.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands yellow, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7700 Ω resistor? (a) violet-violet-brown (b) violet-violet-red (c) violet-grey-red (d) violet-violet-orange
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75000 Ω resistor? (a) violet-green-yellow (b) green-violet-orange (c) violet-green-red (d) violet-green-orange
  27. 27.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7400 Ω resistor? (a) violet-yellow-orange (b) violet-yellow-brown (c) yellow-violet-red (d) violet-yellow-red
  29. 29.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) violet-orange-orange (b) orange-violet-red (c) orange-violet-yellow (d) orange-violet-orange
  31. 31.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands green, orange, red. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does yellow stand for?
  36. 36.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands green, brown, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) orange-black-brown (b) yellow-orange-black (c) orange-black-black (d) yellow-black-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 850 Ω resistor? (a) grey-green-red (b) grey-green-brown (c) grey-green-black (d) green-grey-brown
  40. 40.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?

Answer key

  1. 1
  2. 0
  3. 8
  4. 330
  5. 6
  6. the one nearest an end
  7. 600
  8. red-orange-red
  9. 130
  10. 5 %
  11. 57
  12. white-orange-brown
  13. 260
  14. 340
  15. 9
  16. 69
  17. 7
  18. 620
  19. 760
  20. 5
  21. 6.9
  22. 440
  23. 56000
  24. 9100
  25. violet-violet-red
  26. violet-green-orange
  27. 720
  28. violet-yellow-red
  29. 1.8
  30. orange-violet-orange
  31. 2.3
  32. 2100
  33. 6.8
  34. 5300
  35. 4
  36. 35
  37. 51000
  38. orange-black-black
  39. grey-green-brown
  40. 3600

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