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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 396 · 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.🌈 In the resistor colour code, which number does black stand for?
  2. 2.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does green stand for?
  4. 4.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74 Ω resistor? (a) violet-yellow-brown (b) violet-yellow-black (c) grey-yellow-black (d) yellow-violet-black
  6. 6.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  7. 7.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  8. 8.🌈 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
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) grey-brown-brown (b) brown-grey-red (c) brown-grey-black (d) brown-grey-brown
  11. 11.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands brown, orange, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands brown, white, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 310 Ω resistor? (a) orange-brown-brown (b) brown-orange-brown (c) orange-brown-red (d) orange-brown-black
  18. 18.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) red-orange-orange (b) orange-red-orange (c) red-orange-red (d) red-orange-yellow
  20. 20.🌈 A resistor has the colour bands blue, blue, orange. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands green, blue, red. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does red stand for?
  26. 26.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does brown stand for?
  28. 28.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77 Ω resistor? (a) violet-violet-brown (b) grey-violet-black (c) violet-grey-black (d) violet-violet-black
  35. 35.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands blue, black, red. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-red (b) grey-violet-black (c) grey-violet-brown (d) violet-grey-brown
  38. 38.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands green, white, red. What is its value (in ohms)?

Answer key

  1. 0
  2. 23
  3. 5
  4. 68
  5. violet-yellow-black
  6. the one nearest an end
  7. 70
  8. blue-black-brown
  9. 5 %
  10. brown-grey-brown
  11. 2.7
  12. 690
  13. 5700
  14. 21
  15. 13000
  16. 1.9
  17. orange-brown-brown
  18. 8.5
  19. red-orange-orange
  20. 66000
  21. 5600
  22. 55
  23. 26
  24. 25000
  25. 2
  26. 29
  27. 1
  28. 410
  29. 720
  30. 18
  31. 690
  32. 89
  33. 2200
  34. violet-violet-black
  35. 300
  36. 6000
  37. grey-violet-brown
  38. 6400
  39. 99
  40. 5900

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