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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 713 · 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 brown, grey, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands white, green, orange. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) green-brown-brown (b) green-brown-red (c) green-brown-black (d) brown-green-brown
  4. 4.🌈 A resistor has the colour bands violet, violet, red. What is its value (in ohms)?
  5. 5.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the gold band (d) the widest gap
  6. 6.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 990 Ω resistor? (a) white-white-red (b) white-black-brown (c) white-white-brown (d) white-white-black
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) orange-black-red (b) orange-black-brown (c) orange-black-orange (d) yellow-orange-red
  11. 11.🌈 A resistor has the colour bands yellow, grey, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does grey stand for?
  13. 13.🌈 A resistor has the colour bands violet, blue, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands yellow, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands violet, orange, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5600 Ω resistor? (a) green-blue-red (b) green-blue-brown (c) green-blue-orange (d) blue-green-red
  18. 18.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 50 % (d) 0 %
  19. 19.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-black (b) orange-brown-black (c) brown-red-black (d) red-brown-brown
  21. 21.🌈 In the resistor colour code, which number does yellow stand for?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4600 Ω resistor? (a) blue-yellow-red (b) yellow-blue-red (c) yellow-blue-brown (d) yellow-blue-orange
  23. 23.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) red-red-black (b) brown-red-brown (c) red-brown-black (d) brown-red-black
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53 Ω resistor? (a) blue-orange-black (b) green-orange-brown (c) green-orange-black (d) orange-green-black
  27. 27.🌈 In the resistor colour code, which number does violet stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) violet-blue-black (b) violet-blue-red (c) blue-violet-brown (d) violet-blue-brown
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 500 Ω resistor? (a) green-black-black (b) green-black-brown (c) blue-green-brown (d) green-black-red
  30. 30.🌈 In the resistor colour code, which number does brown stand for?
  31. 31.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, violet, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands white, orange, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6500 Ω resistor? (a) green-blue-red (b) blue-green-orange (c) blue-green-brown (d) blue-green-red
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) yellow-red-yellow (b) yellow-red-red (c) red-yellow-orange (d) yellow-red-orange

Answer key

  1. 18
  2. 95000
  3. green-brown-brown
  4. 7700
  5. the one nearest an end
  6. 60
  7. 13
  8. 23000
  9. white-white-brown
  10. orange-black-red
  11. 48
  12. 8
  13. 76000
  14. 440
  15. 73000
  16. 1500
  17. green-blue-red
  18. 5 %
  19. 86
  20. red-brown-black
  21. 4
  22. yellow-blue-red
  23. 31000
  24. 23
  25. brown-red-black
  26. green-orange-black
  27. 7
  28. violet-blue-brown
  29. green-black-brown
  30. 1
  31. 250
  32. 670
  33. 20000
  34. 87
  35. 670
  36. 860
  37. 93
  38. 380
  39. blue-green-red
  40. yellow-red-orange

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