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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 602 · 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.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands yellow, green, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) any band (d) the widest gap
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62 Ω resistor? (a) blue-red-brown (b) red-blue-black (c) blue-red-black (d) violet-red-black
  7. 7.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does brown stand for?
  10. 10.🌈 A resistor has the colour bands yellow, green, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) brown-red-red (b) brown-red-brown (c) red-brown-red (d) brown-red-orange
  12. 12.🌈 A resistor has the colour bands yellow, orange, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 380 Ω resistor? (a) orange-grey-brown (b) orange-grey-black (c) grey-orange-brown (d) orange-grey-red
  16. 16.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands red, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  20. 20.🌈 In the resistor colour code, which number does white stand for?
  21. 21.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does violet stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8300 Ω resistor? (a) grey-orange-orange (b) grey-orange-brown (c) orange-grey-red (d) grey-orange-red
  24. 24.🌈 A resistor has the colour bands blue, red, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) brown-blue-black (b) blue-brown-black (c) brown-blue-brown (d) red-blue-black
  26. 26.🌈 In the resistor colour code, which number does yellow stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) violet-grey-brown (b) grey-grey-black (c) grey-violet-black (d) violet-grey-black
  28. 28.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39 Ω resistor? (a) orange-white-brown (b) yellow-white-black (c) orange-white-black (d) white-orange-black
  30. 30.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 In the resistor colour code, which number does green stand for?
  35. 35.🌈 In the resistor colour code, which number does orange stand for?
  36. 36.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 In the resistor colour code, which number does black stand for?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7900 Ω resistor? (a) white-violet-red (b) violet-white-brown (c) violet-white-red (d) violet-white-orange

Answer key

  1. 2500
  2. 8.8
  3. 45
  4. 37
  5. the one nearest an end
  6. blue-red-black
  7. 9900
  8. 12
  9. 1
  10. 450
  11. brown-red-red
  12. 43000
  13. 6.1
  14. 79
  15. orange-grey-brown
  16. 22
  17. 280
  18. 80
  19. 5 %
  20. 9
  21. 410
  22. 7
  23. grey-orange-red
  24. 62
  25. brown-blue-black
  26. 4
  27. violet-grey-black
  28. 360
  29. orange-white-black
  30. 200
  31. 780
  32. 84
  33. 230
  34. 5
  35. 3
  36. 19
  37. 10
  38. 3.6
  39. 0
  40. violet-white-red

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