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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 613 · 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) any band (c) the widest gap (d) the gold band
  2. 2.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands blue, green, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does blue stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29 Ω resistor? (a) orange-white-black (b) red-white-brown (c) red-white-black (d) white-red-black
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4200 Ω resistor? (a) yellow-red-brown (b) yellow-red-red (c) yellow-red-orange (d) red-yellow-red
  7. 7.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does black stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) orange-black-black (b) yellow-orange-black (c) orange-black-brown (d) yellow-black-black
  11. 11.🌈 In the resistor colour code, which number does white stand for?
  12. 12.🌈 A resistor has the colour bands yellow, orange, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) grey-green-red (b) green-grey-orange (c) grey-green-orange (d) grey-green-yellow
  16. 16.🌈 In the resistor colour code, which number does violet stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71 Ω resistor? (a) violet-brown-brown (b) violet-brown-black (c) brown-violet-black (d) grey-brown-black
  18. 18.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands yellow, blue, red. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1600 Ω resistor? (a) brown-blue-red (b) brown-blue-brown (c) brown-blue-orange (d) blue-brown-red
  22. 22.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 5 % (d) 0 %
  23. 23.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) grey-red-brown (b) red-grey-red (c) red-grey-black (d) red-grey-brown
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) violet-orange-orange (b) orange-violet-yellow (c) orange-violet-red (d) orange-violet-orange
  31. 31.🌈 In the resistor colour code, which number does yellow stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90000 Ω resistor? (a) white-black-red (b) white-black-yellow (c) brown-white-orange (d) white-black-orange
  33. 33.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66000 Ω resistor? (a) blue-blue-orange (b) blue-violet-orange (c) blue-blue-yellow (d) blue-blue-red
  40. 40.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. the one nearest an end
  2. 15
  3. 650
  4. 6
  5. red-white-black
  6. yellow-red-red
  7. 500
  8. 18
  9. 0
  10. orange-black-black
  11. 9
  12. 4.3
  13. 450
  14. 19
  15. grey-green-orange
  16. 7
  17. violet-brown-black
  18. 4.4
  19. 590
  20. 4600
  21. brown-blue-red
  22. 5 %
  23. 49
  24. 50000
  25. 7000
  26. 42
  27. 620
  28. 94000
  29. red-grey-brown
  30. orange-violet-orange
  31. 4
  32. white-black-orange
  33. 41
  34. 10
  35. 24000
  36. 70000
  37. 1.2
  38. 14
  39. blue-blue-orange
  40. 1

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