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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 60 · 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 colour bands (1st digit, 2nd digit, multiplier) mark a 440 Ω resistor? (a) yellow-yellow-brown (b) yellow-green-brown (c) yellow-yellow-red (d) yellow-yellow-black
  2. 2.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) green-green-black (b) yellow-green-brown (c) green-yellow-black (d) yellow-green-black
  7. 7.🌈 In the resistor colour code, which number does yellow stand for?
  8. 8.🌈 In the resistor colour code, which number does grey stand for?
  9. 9.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) brown-blue-brown (b) red-blue-black (c) brown-blue-black (d) blue-brown-black
  12. 12.🌈 In the resistor colour code, which number does orange stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8800 Ω resistor? (a) grey-grey-brown (b) grey-grey-red (c) grey-grey-orange (d) grey-white-red
  14. 14.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does violet stand for?
  17. 17.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  18. 18.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does blue stand for?
  23. 23.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does white stand for?
  25. 25.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  26. 26.🌈 In the resistor colour code, which number does black stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) grey-violet-red (b) violet-grey-brown (c) violet-grey-orange (d) violet-grey-red
  28. 28.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?
  29. 29.🌈 In the resistor colour code, which number does red stand for?
  30. 30.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands yellow, green, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands grey, black, 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 kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) grey-red-red (b) red-grey-red (c) red-grey-brown (d) red-grey-orange
  39. 39.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) red-violet-black (b) grey-red-black (c) violet-red-brown (d) violet-red-black

Answer key

  1. yellow-yellow-brown
  2. 8.5
  3. 88
  4. 580
  5. 250
  6. yellow-green-black
  7. 4
  8. 8
  9. 1.4
  10. 5 %
  11. brown-blue-black
  12. 3
  13. grey-grey-red
  14. 90
  15. 920
  16. 7
  17. the one nearest an end
  18. 60000
  19. 50
  20. 670
  21. 8400
  22. 6
  23. 250
  24. 9
  25. 30000
  26. 0
  27. violet-grey-red
  28. 21000
  29. 2
  30. 500
  31. 45
  32. 410
  33. 2400
  34. 50000
  35. 27
  36. 80
  37. 51
  38. red-grey-red
  39. 52
  40. violet-red-black

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