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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 180 · 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.

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  1. 1.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  4. 4.🌈 In the resistor colour code, which number does white stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) yellow-grey-brown (b) grey-yellow-red (c) yellow-grey-red (d) yellow-grey-orange
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) red-brown-orange (b) brown-black-orange (c) brown-black-yellow (d) brown-black-red
  7. 7.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  8. 8.🌈 In the resistor colour code, which number does orange stand for?
  9. 9.🌈 In the resistor colour code, which number does blue stand for?
  10. 10.🌈 A resistor has the colour bands red, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56000 Ω resistor? (a) blue-green-orange (b) green-blue-yellow (c) green-blue-red (d) green-blue-orange
  13. 13.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-black (b) white-red-brown (c) red-white-brown (d) red-white-red
  15. 15.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does yellow stand for?
  18. 18.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) violet-orange-orange (b) violet-orange-red (c) orange-violet-orange (d) violet-orange-yellow
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 730 Ω resistor? (a) orange-violet-brown (b) violet-orange-red (c) violet-orange-black (d) violet-orange-brown
  21. 21.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does red stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) violet-red-orange (b) red-violet-red (c) red-violet-orange (d) red-violet-yellow
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71000 Ω resistor? (a) violet-brown-red (b) brown-violet-orange (c) violet-brown-orange (d) violet-brown-yellow
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) yellow-brown-orange (b) brown-yellow-orange (c) yellow-brown-yellow (d) yellow-brown-red
  26. 26.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 710 Ω resistor? (a) violet-brown-red (b) brown-violet-brown (c) violet-brown-brown (d) violet-brown-black
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82000 Ω resistor? (a) red-grey-orange (b) grey-red-red (c) grey-red-orange (d) grey-red-yellow
  29. 29.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does brown stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) green-yellow-black (b) yellow-green-brown (c) green-green-black (d) yellow-green-black
  33. 33.🌈 A resistor has the colour bands yellow, blue, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-orange-black (b) red-red-brown (c) red-red-black (d) orange-red-black
  35. 35.🌈 A resistor has the colour bands yellow, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9100 Ω resistor? (a) white-brown-red (b) white-brown-orange (c) white-brown-brown (d) brown-white-red
  37. 37.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 In the resistor colour code, which number does green stand for?
  39. 39.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands violet, yellow, brown. What is its value (in ohms)?

Answer key

  1. 6.6
  2. 680
  3. 5 %
  4. 9
  5. yellow-grey-red
  6. brown-black-orange
  7. the one nearest an end
  8. 3
  9. 6
  10. 280
  11. 60
  12. green-blue-orange
  13. 12
  14. red-white-brown
  15. 920
  16. 3.4
  17. 4
  18. 3000
  19. violet-orange-orange
  20. violet-orange-brown
  21. 4.4
  22. 2
  23. red-violet-orange
  24. violet-brown-orange
  25. yellow-brown-orange
  26. 300
  27. violet-brown-brown
  28. grey-red-orange
  29. 16000
  30. 30
  31. 1
  32. yellow-green-black
  33. 46
  34. red-red-black
  35. 470
  36. white-brown-red
  37. 7.9
  38. 5
  39. 410
  40. 740

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