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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 165 · 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 gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  2. 2.🌈 A resistor has the colour bands green, green, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) brown-black-yellow (b) red-brown-orange (c) brown-black-orange (d) brown-black-red
  4. 4.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 In the resistor colour code, which number does violet stand for?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) white-red-black (b) red-grey-black (c) grey-red-brown (d) grey-red-black
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) violet-blue-brown (b) violet-blue-black (c) blue-violet-black (d) grey-blue-black
  8. 8.🌈 In the resistor colour code, which number does brown stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68000 Ω resistor? (a) grey-blue-orange (b) blue-grey-yellow (c) blue-grey-orange (d) blue-grey-red
  10. 10.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) grey-white-brown (b) white-grey-brown (c) white-grey-black (d) white-grey-red
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) blue-grey-black (b) green-grey-black (c) grey-green-black (d) green-grey-brown
  14. 14.🌈 In the resistor colour code, which number does grey stand for?
  15. 15.🌈 In the resistor colour code, which number does orange stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7000 Ω resistor? (a) violet-black-red (b) grey-violet-red (c) violet-black-orange (d) violet-black-brown
  17. 17.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-black (b) red-grey-brown (c) red-grey-red (d) grey-red-brown
  19. 19.🌈 In the resistor colour code, which number does yellow stand for?
  20. 20.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands grey, violet, orange. 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 red stand for?
  26. 26.🌈 In the resistor colour code, which number does white stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 97 Ω resistor? (a) violet-white-black (b) white-violet-brown (c) brown-violet-black (d) white-violet-black
  28. 28.🌈 In the resistor colour code, which number does blue stand for?
  29. 29.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 350 Ω resistor? (a) orange-green-red (b) orange-green-brown (c) green-orange-brown (d) orange-green-black
  31. 31.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 46 Ω resistor? (a) yellow-blue-brown (b) yellow-blue-black (c) blue-yellow-black (d) green-blue-black
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90000 Ω resistor? (a) brown-white-orange (b) white-black-red (c) white-black-yellow (d) white-black-orange
  34. 34.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands blue, black, red. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) yellow-red-black (b) yellow-red-brown (c) green-red-black (d) red-yellow-black
  37. 37.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7700 Ω resistor? (a) violet-violet-brown (b) violet-violet-orange (c) violet-grey-red (d) violet-violet-red
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66 Ω resistor? (a) blue-blue-black (b) violet-blue-black (c) blue-violet-black (d) blue-blue-brown

Answer key

  1. 5 %
  2. 550
  3. brown-black-orange
  4. 450
  5. 7
  6. grey-red-black
  7. violet-blue-black
  8. 1
  9. blue-grey-orange
  10. 2.3
  11. the one nearest an end
  12. white-grey-brown
  13. green-grey-black
  14. 8
  15. 3
  16. violet-black-red
  17. 25
  18. red-grey-brown
  19. 4
  20. 940
  21. 56000
  22. 8.5
  23. 87000
  24. 0
  25. 2
  26. 9
  27. white-violet-black
  28. 6
  29. 7.8
  30. orange-green-brown
  31. 2.7
  32. yellow-blue-black
  33. white-black-orange
  34. 870
  35. 6000
  36. yellow-red-black
  37. 26000
  38. 9000
  39. violet-violet-red
  40. blue-blue-black

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