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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 695 · 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 green, black, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 In the resistor colour code, which number does grey stand for?
  3. 3.🌈 In the resistor colour code, which number does red stand for?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94000 Ω resistor? (a) white-yellow-red (b) white-yellow-yellow (c) white-yellow-orange (d) yellow-white-orange
  5. 5.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3600 Ω resistor? (a) orange-blue-orange (b) orange-blue-red (c) orange-blue-brown (d) blue-orange-red
  7. 7.🌈 In the resistor colour code, which number does white stand for?
  8. 8.🌈 A resistor has the colour bands yellow, black, yellow. 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) 50 % (b) 0 % (c) 25 % (d) 5 %
  10. 10.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands brown, violet, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands blue, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  17. 17.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26 Ω resistor? (a) red-blue-black (b) orange-blue-black (c) red-blue-brown (d) blue-red-black
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 410 Ω resistor? (a) brown-yellow-brown (b) yellow-brown-red (c) yellow-brown-black (d) yellow-brown-brown
  20. 20.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands blue, grey, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75000 Ω resistor? (a) green-violet-orange (b) violet-green-red (c) violet-green-orange (d) violet-green-yellow
  25. 25.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does blue stand for?
  28. 28.🌈 A resistor has the colour bands blue, grey, orange. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) yellow-violet-black (b) yellow-violet-brown (c) violet-yellow-black (d) green-violet-black
  30. 30.🌈 In the resistor colour code, which number does orange stand for?
  31. 31.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) white-grey-orange (b) grey-black-yellow (c) grey-black-orange (d) grey-black-red
  35. 35.🌈 A resistor has the colour bands violet, blue, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) red-brown-red (b) brown-black-brown (c) brown-black-orange (d) brown-black-red
  39. 39.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) red-black-orange (b) red-black-red (c) orange-red-red (d) red-black-brown

Answer key

  1. 5
  2. 8
  3. 2
  4. white-yellow-orange
  5. 22000
  6. orange-blue-red
  7. 9
  8. 400
  9. 5 %
  10. 38000
  11. 17
  12. 490
  13. 64
  14. 7100
  15. 5100
  16. 8500
  17. the one nearest an end
  18. red-blue-black
  19. yellow-brown-brown
  20. 290
  21. 7500
  22. 6.3
  23. 68
  24. violet-green-orange
  25. 26
  26. 27000
  27. 6
  28. 68000
  29. yellow-violet-black
  30. 3
  31. 80000
  32. 5.8
  33. 31
  34. grey-black-orange
  35. 76
  36. 80
  37. 210
  38. brown-black-red
  39. 620
  40. red-black-red

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