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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 311 · 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.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-brown-brown (b) brown-red-red (c) brown-brown-red (d) brown-brown-orange
  4. 4.🌈 In the resistor colour code, which number does brown stand for?
  5. 5.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does white stand for?
  8. 8.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
  9. 9.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  12. 12.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does yellow stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) green-black-brown (b) blue-green-black (c) blue-black-black (d) green-black-black
  15. 15.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 260 Ω resistor? (a) blue-red-brown (b) red-blue-red (c) red-blue-black (d) red-blue-brown
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6600 Ω resistor? (a) blue-blue-red (b) blue-violet-red (c) blue-blue-brown (d) blue-blue-orange
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66000 Ω resistor? (a) blue-blue-red (b) blue-blue-yellow (c) blue-blue-orange (d) blue-violet-orange
  19. 19.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does black stand for?
  25. 25.🌈 In the resistor colour code, which number does grey stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) brown-green-orange (b) green-brown-yellow (c) green-brown-orange (d) green-brown-red
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) grey-green-black (b) green-grey-black (c) white-green-black (d) grey-green-brown
  28. 28.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does violet stand for?
  35. 35.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) red-black-brown (b) red-black-orange (c) red-black-red (d) orange-red-red
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91000 Ω resistor? (a) white-brown-red (b) brown-white-orange (c) white-brown-orange (d) white-brown-yellow
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24 Ω resistor? (a) orange-yellow-black (b) red-yellow-black (c) yellow-red-black (d) red-yellow-brown

Answer key

  1. 2
  2. 3400
  3. brown-brown-red
  4. 1
  5. 20
  6. 86
  7. 9
  8. the one nearest an end
  9. 510
  10. 4.4
  11. 5 %
  12. 1100
  13. 4
  14. green-black-black
  15. 5700
  16. red-blue-brown
  17. blue-blue-red
  18. blue-blue-orange
  19. 15
  20. 260
  21. 1.4
  22. 28000
  23. 39
  24. 0
  25. 8
  26. green-brown-orange
  27. grey-green-black
  28. 31
  29. 6.7
  30. 9700
  31. 47
  32. 5000
  33. 6900
  34. 7
  35. 410
  36. 300
  37. 1000
  38. red-black-red
  39. white-brown-orange
  40. red-yellow-black

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