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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 740 · 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 violet, black, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands orange, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  5. 5.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
  6. 6.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does brown stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35000 Ω resistor? (a) orange-green-red (b) orange-green-yellow (c) green-orange-orange (d) orange-green-orange
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) brown-black-red (b) brown-black-yellow (c) red-brown-orange (d) brown-black-orange
  10. 10.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does red stand for?
  12. 12.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) brown-grey-brown (b) red-grey-black (c) brown-grey-black (d) grey-brown-black
  15. 15.🌈 In the resistor colour code, which number does green stand for?
  16. 16.🌈 In the resistor colour code, which number does blue stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81000 Ω resistor? (a) grey-brown-orange (b) brown-grey-orange (c) grey-brown-yellow (d) grey-brown-red
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55000 Ω resistor? (a) green-green-red (b) green-green-yellow (c) green-blue-orange (d) green-green-orange
  19. 19.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does yellow stand for?
  23. 23.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands violet, black, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) brown-black-brown (b) red-black-black (c) brown-black-black (d) red-brown-black
  26. 26.🌈 A resistor has the colour bands white, grey, black. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62 Ω resistor? (a) violet-red-black (b) red-blue-black (c) blue-red-brown (d) blue-red-black
  28. 28.🌈 In the resistor colour code, which number does grey stand for?
  29. 29.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55 Ω resistor? (a) green-blue-black (b) green-green-brown (c) green-green-black (d) blue-green-black
  35. 35.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) yellow-orange-orange (b) orange-black-red (c) orange-black-yellow (d) orange-black-orange
  38. 38.🌈 A resistor has the colour bands yellow, orange, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11000 Ω resistor? (a) brown-brown-red (b) brown-red-orange (c) brown-brown-yellow (d) brown-brown-orange
  40. 40.🌈 A resistor has the colour bands yellow, grey, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 70000
  2. 94000
  3. 370
  4. 5 %
  5. the one nearest an end
  6. 82
  7. 1
  8. orange-green-orange
  9. brown-black-orange
  10. 40
  11. 2
  12. 12
  13. 50
  14. brown-grey-black
  15. 5
  16. 6
  17. grey-brown-orange
  18. green-green-orange
  19. 84
  20. 2.5
  21. 9.6
  22. 4
  23. 2.6
  24. 700
  25. brown-black-black
  26. 98
  27. blue-red-black
  28. 8
  29. 23
  30. 21
  31. 2000
  32. 2.1
  33. 7
  34. green-green-black
  35. 88
  36. 27000
  37. orange-black-orange
  38. 4.3
  39. brown-brown-orange
  40. 48

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