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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 163 · 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 widest gap (b) the gold band (c) any band (d) the one nearest an end
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72000 Ω resistor? (a) violet-red-orange (b) red-violet-orange (c) violet-red-yellow (d) violet-red-red
  3. 3.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) grey-green-brown (b) green-grey-black (c) green-grey-brown (d) green-grey-red
  5. 5.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands violet, orange, orange. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66 Ω resistor? (a) blue-blue-brown (b) blue-blue-black (c) blue-violet-black (d) violet-blue-black
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  11. 11.🌈 In the resistor colour code, which number does yellow stand for?
  12. 12.🌈 A resistor has the colour bands grey, red, black. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does green stand for?
  14. 14.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2700 Ω resistor? (a) red-violet-orange (b) red-violet-red (c) violet-red-red (d) red-violet-brown
  16. 16.🌈 In the resistor colour code, which number does brown stand for?
  17. 17.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands orange, yellow, brown. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5300 Ω resistor? (a) orange-green-red (b) green-orange-brown (c) green-orange-red (d) green-orange-orange
  20. 20.🌈 In the resistor colour code, which number does grey stand for?
  21. 21.🌈 A resistor has the colour bands violet, green, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) green-black-brown (b) blue-black-black (c) green-black-black (d) blue-green-black
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) grey-brown-red (b) brown-grey-orange (c) brown-grey-brown (d) brown-grey-red
  28. 28.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands white, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79000 Ω resistor? (a) white-violet-orange (b) violet-white-yellow (c) violet-white-red (d) violet-white-orange
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) violet-white-brown (b) violet-white-black (c) white-violet-black (d) grey-white-black
  38. 38.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. violet-red-orange
  3. 72
  4. green-grey-brown
  5. 41
  6. 5100
  7. 830
  8. 73000
  9. blue-blue-black
  10. 5 %
  11. 4
  12. 82
  13. 5
  14. 32
  15. red-violet-red
  16. 1
  17. 52000
  18. 340
  19. green-orange-red
  20. 8
  21. 7.5
  22. 22
  23. 28000
  24. 88000
  25. 510
  26. green-black-black
  27. brown-grey-red
  28. 8.9
  29. 1.2
  30. 9.8
  31. 930
  32. 31
  33. 44000
  34. 2.6
  35. 73
  36. violet-white-orange
  37. violet-white-black
  38. 42
  39. 720
  40. 87000

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