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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 653 · 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 white, grey, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) grey-white-black (b) white-grey-black (c) white-grey-brown (d) brown-grey-black
  4. 4.🌈 In the resistor colour code, which number does black stand for?
  5. 5.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands blue, black, red. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) violet-brown-brown (b) violet-brown-orange (c) violet-brown-red (d) brown-violet-red
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14000 Ω resistor? (a) brown-yellow-red (b) brown-yellow-yellow (c) brown-yellow-orange (d) yellow-brown-orange
  12. 12.🌈 In the resistor colour code, which number does blue stand for?
  13. 13.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands grey, white, red. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands green, green, brown. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does violet stand for?
  17. 17.🌈 A resistor has the colour bands orange, violet, brown. 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) grey-red-brown (d) red-grey-red
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) blue-red-orange (b) red-blue-orange (c) blue-red-yellow (d) blue-red-red
  20. 20.🌈 A resistor has the colour bands white, green, black. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 600 Ω resistor? (a) blue-black-black (b) blue-black-red (c) violet-blue-brown (d) blue-black-brown
  22. 22.🌈 A resistor has the colour bands white, grey, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 In the resistor colour code, which number does green stand for?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-yellow-brown (b) green-yellow-black (c) yellow-green-black (d) yellow-yellow-black
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) red-violet-black (b) violet-red-black (c) grey-red-black (d) violet-red-brown
  31. 31.🌈 A resistor has the colour bands white, grey, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands yellow, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands blue, blue, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands red, orange, red. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-brown (b) red-white-black (c) red-white-red (d) white-red-brown

Answer key

  1. 9.8
  2. the one nearest an end
  3. white-grey-black
  4. 0
  5. 51
  6. 6000
  7. 24
  8. 8.9
  9. 5 %
  10. violet-brown-red
  11. brown-yellow-orange
  12. 6
  13. 240
  14. 8900
  15. 550
  16. 7
  17. 370
  18. red-grey-brown
  19. blue-red-orange
  20. 95
  21. blue-black-brown
  22. 9800
  23. 8800
  24. 54000
  25. 27000
  26. 8.5
  27. 84
  28. 5
  29. yellow-yellow-black
  30. violet-red-black
  31. 98
  32. 120
  33. 33
  34. 2400
  35. 470
  36. 52
  37. 88
  38. 66000
  39. 2300
  40. red-white-brown

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