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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 512 · 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 red stand for?
  2. 2.🌈 In the resistor colour code, which number does green stand for?
  3. 3.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands green, blue, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands yellow, yellow, red. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1700 Ω resistor? (a) brown-violet-brown (b) brown-violet-red (c) brown-violet-orange (d) violet-brown-red
  8. 8.🌈 In the resistor colour code, which number does white stand for?
  9. 9.🌈 In the resistor colour code, which number does orange stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-red (b) grey-violet-black (c) grey-violet-brown (d) violet-grey-brown
  11. 11.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands violet, orange, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does black stand for?
  16. 16.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 50 % (d) 25 %
  17. 17.🌈 A resistor has the colour bands yellow, blue, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands grey, violet, black. What is its value (in ohms)?
  21. 21.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the gold band (d) the one nearest an end
  22. 22.🌈 In the resistor colour code, which number does brown stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1400 Ω resistor? (a) brown-yellow-red (b) brown-yellow-brown (c) yellow-brown-red (d) brown-yellow-orange
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) yellow-orange-red (b) orange-black-brown (c) orange-black-red (d) orange-black-orange
  25. 25.🌈 A resistor has the colour bands white, blue, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) brown-black-black (b) red-brown-black (c) brown-black-brown (d) red-black-black
  28. 28.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-red (b) red-black-yellow (c) orange-red-orange (d) red-black-orange
  32. 32.🌈 A resistor has the colour bands yellow, grey, orange. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93000 Ω resistor? (a) white-orange-red (b) white-orange-yellow (c) orange-white-orange (d) white-orange-orange
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-violet-black (b) grey-black-black (c) violet-black-brown (d) violet-black-black
  35. 35.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands white, black, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15 Ω resistor? (a) green-brown-black (b) brown-green-black (c) red-green-black (d) brown-green-brown
  40. 40.🌈 A resistor has the colour bands yellow, red, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 2
  2. 5
  3. 600
  4. 62
  5. 560
  6. 4400
  7. brown-violet-red
  8. 9
  9. 3
  10. grey-violet-brown
  11. 3.9
  12. 710
  13. 7.3
  14. 680
  15. 0
  16. 5 %
  17. 4600
  18. 1.2
  19. 450
  20. 87
  21. the one nearest an end
  22. 1
  23. brown-yellow-red
  24. orange-black-red
  25. 9600
  26. 290
  27. brown-black-black
  28. 14
  29. 11
  30. 23
  31. red-black-orange
  32. 48000
  33. white-orange-orange
  34. violet-black-black
  35. 26
  36. 430
  37. 29
  38. 900
  39. brown-green-black
  40. 420

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