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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 118 · 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 22 Ω resistor? (a) red-orange-black (b) orange-red-black (c) red-red-brown (d) red-red-black
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79000 Ω resistor? (a) violet-white-orange (b) violet-white-yellow (c) white-violet-orange (d) violet-white-red
  3. 3.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  5. 5.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does white stand for?
  7. 7.🌈 In the resistor colour code, which number does brown stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) grey-brown-black (b) brown-grey-black (c) white-brown-black (d) grey-brown-brown
  9. 9.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) green-red-brown (b) red-green-black (c) green-red-black (d) blue-red-black
  15. 15.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) white-black-black (b) brown-white-black (c) white-white-brown (d) white-white-black
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) red-grey-orange (b) red-grey-brown (c) red-grey-red (d) grey-red-red
  18. 18.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 In the resistor colour code, which number does blue stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4700 Ω resistor? (a) violet-yellow-red (b) yellow-violet-brown (c) yellow-violet-red (d) yellow-violet-orange
  22. 22.🌈 A resistor has the colour bands blue, red, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96 Ω resistor? (a) white-blue-brown (b) brown-blue-black (c) blue-white-black (d) white-blue-black
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92 Ω resistor? (a) brown-red-black (b) white-red-black (c) red-white-black (d) white-red-brown
  26. 26.🌈 A resistor has the colour bands blue, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands orange, white, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69 Ω resistor? (a) blue-white-black (b) violet-white-black (c) blue-white-brown (d) white-blue-black
  32. 32.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands violet, brown, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29000 Ω resistor? (a) red-white-red (b) red-white-yellow (c) red-white-orange (d) white-red-orange
  35. 35.🌈 In the resistor colour code, which number does red stand for?
  36. 36.🌈 A resistor has the colour bands green, white, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 In the resistor colour code, which number does violet stand for?
  38. 38.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. red-red-black
  2. violet-white-orange
  3. 20000
  4. 5 %
  5. 26
  6. 9
  7. 1
  8. grey-brown-black
  9. 11
  10. 8.1
  11. 680
  12. 1.1
  13. 50000
  14. green-red-black
  15. the one nearest an end
  16. white-white-black
  17. red-grey-red
  18. 8100
  19. 6.3
  20. 6
  21. yellow-violet-red
  22. 62
  23. 9000
  24. white-blue-black
  25. white-red-black
  26. 64
  27. 4.4
  28. 39
  29. 12000
  30. 7000
  31. blue-white-black
  32. 64000
  33. 71
  34. red-white-orange
  35. 2
  36. 59
  37. 7
  38. 290
  39. 500
  40. 9

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