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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 516 · 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 orange, red, black. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does white stand for?
  3. 3.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 920 Ω resistor? (a) white-red-brown (b) red-white-brown (c) white-red-red (d) white-red-black
  5. 5.🌈 In the resistor colour code, which number does orange stand for?
  6. 6.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) green-black-brown (b) blue-black-black (c) green-black-black (d) blue-green-black
  8. 8.🌈 In the resistor colour code, which number does brown stand for?
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  10. 10.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  11. 11.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands blue, brown, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does green stand for?
  15. 15.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 400 Ω resistor? (a) green-yellow-brown (b) yellow-black-brown (c) yellow-black-black (d) yellow-black-red
  18. 18.🌈 In the resistor colour code, which number does grey stand for?
  19. 19.🌈 In the resistor colour code, which number does yellow stand for?
  20. 20.🌈 A resistor has the colour bands grey, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands white, white, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22000 Ω resistor? (a) red-red-orange (b) red-orange-orange (c) red-red-red (d) red-red-yellow
  23. 23.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 830 Ω resistor? (a) grey-orange-brown (b) orange-grey-brown (c) grey-orange-red (d) grey-orange-black
  25. 25.🌈 In the resistor colour code, which number does blue stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 990 Ω resistor? (a) white-white-red (b) white-white-brown (c) white-white-black (d) white-black-brown
  27. 27.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands yellow, black, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands brown, green, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93000 Ω resistor? (a) orange-white-orange (b) white-orange-red (c) white-orange-yellow (d) white-orange-orange
  34. 34.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands yellow, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) yellow-brown-brown (b) brown-yellow-brown (c) brown-yellow-red (d) brown-yellow-black
  38. 38.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands blue, green, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands violet, green, black. What is its value (in ohms)?

Answer key

  1. 32
  2. 9
  3. 600
  4. white-red-brown
  5. 3
  6. 300
  7. green-black-black
  8. 1
  9. 5 %
  10. the one nearest an end
  11. 2000
  12. 61
  13. 2200
  14. 5
  15. 470
  16. 450
  17. yellow-black-brown
  18. 8
  19. 4
  20. 880
  21. 990
  22. red-red-orange
  23. 410
  24. grey-orange-brown
  25. 6
  26. white-white-brown
  27. 88
  28. 400
  29. 220
  30. 150
  31. 4200
  32. 34000
  33. white-orange-orange
  34. 3.5
  35. 3.3
  36. 470
  37. brown-yellow-brown
  38. 8.4
  39. 650
  40. 75

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