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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 855 · 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.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
  2. 2.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68 Ω resistor? (a) grey-blue-black (b) blue-grey-black (c) violet-grey-black (d) blue-grey-brown
  4. 4.🌈 In the resistor colour code, which number does violet stand for?
  5. 5.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands yellow, red, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 In the resistor colour code, which number does grey stand for?
  11. 11.🌈 A resistor has the colour bands yellow, yellow, black. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) violet-grey-black (b) violet-grey-brown (c) grey-violet-black (d) grey-grey-black
  13. 13.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does yellow stand for?
  16. 16.🌈 In the resistor colour code, which number does blue stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-orange-black (b) orange-red-black (c) red-red-black (d) red-red-brown
  18. 18.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) yellow-grey-orange (b) yellow-grey-red (c) yellow-grey-brown (d) grey-yellow-red
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) green-grey-black (b) white-green-black (c) grey-green-brown (d) grey-green-black
  21. 21.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  22. 22.🌈 In the resistor colour code, which number does white stand for?
  23. 23.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does orange stand for?
  25. 25.🌈 A resistor has the colour bands grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) brown-white-brown (b) brown-white-red (c) brown-white-black (d) white-brown-brown
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-green-black (b) green-yellow-black (c) yellow-yellow-brown (d) yellow-yellow-black
  30. 30.🌈 In the resistor colour code, which number does red stand for?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 500 Ω resistor? (a) green-black-black (b) green-black-red (c) green-black-brown (d) blue-green-brown
  32. 32.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-brown (b) red-brown-brown (c) brown-red-black (d) brown-red-red
  34. 34.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands yellow, yellow, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does brown stand for?

Answer key

  1. 5700
  2. the one nearest an end
  3. blue-grey-black
  4. 7
  5. 7500
  6. 750
  7. 3200
  8. 9200
  9. 420
  10. 8
  11. 44
  12. violet-grey-black
  13. 990
  14. 10
  15. 4
  16. 6
  17. red-red-black
  18. 3.6
  19. yellow-grey-red
  20. grey-green-black
  21. 5 %
  22. 9
  23. 260
  24. 3
  25. 860
  26. 86
  27. 31
  28. brown-white-brown
  29. yellow-yellow-black
  30. 2
  31. green-black-brown
  32. 36
  33. brown-red-brown
  34. 3300
  35. 440
  36. 160
  37. 9.9
  38. 14
  39. 26
  40. 1

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