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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 487 · 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.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) the widest gap (d) any band
  2. 2.🌈 In the resistor colour code, which number does red stand for?
  3. 3.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) green-yellow-black (b) yellow-green-black (c) yellow-green-brown (d) green-green-black
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-red (b) red-black-yellow (c) red-black-orange (d) orange-red-orange
  6. 6.🌈 A resistor has the colour bands violet, orange, orange. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does violet stand for?
  8. 8.🌈 A resistor has the colour bands white, orange, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands orange, violet, brown. 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) 0 % (c) 25 % (d) 5 %
  11. 11.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) red-brown-orange (b) brown-red-orange (c) red-brown-yellow (d) red-brown-red
  16. 16.🌈 In the resistor colour code, which number does grey stand for?
  17. 17.🌈 A resistor has the colour bands white, yellow, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) red-blue-orange (b) blue-red-red (c) blue-red-orange (d) blue-red-yellow
  19. 19.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5500 Ω resistor? (a) green-green-orange (b) green-blue-red (c) green-green-red (d) green-green-brown
  21. 21.🌈 A resistor has the colour bands green, white, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70000 Ω resistor? (a) violet-black-red (b) grey-violet-orange (c) violet-black-orange (d) violet-black-yellow
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32 Ω resistor? (a) orange-red-brown (b) red-orange-black (c) yellow-red-black (d) orange-red-black
  24. 24.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands yellow, yellow, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does blue stand for?
  28. 28.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89 Ω resistor? (a) white-white-black (b) white-grey-black (c) grey-white-black (d) grey-white-brown
  30. 30.🌈 In the resistor colour code, which number does white stand for?
  31. 31.🌈 A resistor has the colour bands blue, violet, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands white, blue, red. What is its value (in ohms)?
  39. 39.🌈 In the resistor colour code, which number does green stand for?
  40. 40.🌈 In the resistor colour code, which number does brown stand for?

Answer key

  1. the one nearest an end
  2. 2
  3. 5.9
  4. yellow-green-black
  5. red-black-orange
  6. 73000
  7. 7
  8. 93
  9. 370
  10. 5 %
  11. 820
  12. 980
  13. 29
  14. 970
  15. red-brown-orange
  16. 8
  17. 9.4
  18. blue-red-orange
  19. 2500
  20. green-green-red
  21. 59
  22. violet-black-orange
  23. orange-red-black
  24. 21
  25. 4400
  26. 3.3
  27. 6
  28. 210
  29. grey-white-black
  30. 9
  31. 67000
  32. 1.6
  33. 22
  34. 7
  35. 25000
  36. 700
  37. 67
  38. 9600
  39. 5
  40. 1

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