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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 45 · 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 green, black, brown. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83 Ω resistor? (a) grey-orange-black (b) orange-grey-black (c) grey-orange-brown (d) white-orange-black
  3. 3.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does blue stand for?
  5. 5.🌈 A resistor has the colour bands green, orange, red. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands green, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  8. 8.🌈 A resistor has the colour bands white, black, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does green stand for?
  10. 10.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands violet, blue, orange. What is its value (in ohms)?
  12. 12.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  13. 13.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands blue, yellow, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands green, brown, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 In the resistor colour code, which number does white stand for?
  19. 19.🌈 In the resistor colour code, which number does violet stand for?
  20. 20.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does black stand for?
  24. 24.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does brown stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 680 Ω resistor? (a) blue-grey-black (b) blue-grey-red (c) blue-grey-brown (d) grey-blue-brown
  27. 27.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 In the resistor colour code, which number does red stand for?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-red (b) violet-grey-brown (c) grey-violet-black (d) grey-violet-brown
  31. 31.🌈 In the resistor colour code, which number does yellow stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) white-red-black (b) grey-red-brown (c) red-grey-black (d) grey-red-black
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8800 Ω resistor? (a) grey-grey-brown (b) grey-grey-red (c) grey-grey-orange (d) grey-white-red
  34. 34.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3900 Ω resistor? (a) orange-white-red (b) orange-white-orange (c) orange-white-brown (d) white-orange-red
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-black (b) brown-red-red (c) brown-red-brown (d) red-brown-brown
  38. 38.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) white-black-black (b) brown-white-black (c) white-white-black (d) white-white-brown
  40. 40.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 500
  2. grey-orange-black
  3. 6.3
  4. 6
  5. 5300
  6. 54
  7. 5 %
  8. 90
  9. 5
  10. 88
  11. 76000
  12. the one nearest an end
  13. 230
  14. 300
  15. 6.4
  16. 51000
  17. 840
  18. 9
  19. 7
  20. 38
  21. 510
  22. 25
  23. 0
  24. 520
  25. 1
  26. blue-grey-brown
  27. 920
  28. 14
  29. 2
  30. grey-violet-brown
  31. 4
  32. grey-red-black
  33. grey-grey-red
  34. 9.9
  35. 1
  36. orange-white-red
  37. brown-red-brown
  38. 20000
  39. white-white-black
  40. 190

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