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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 951 · 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 gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  2. 2.🌈 A resistor has the colour bands grey, white, red. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does green stand for?
  5. 5.🌈 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
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3600 Ω resistor? (a) orange-blue-brown (b) orange-blue-orange (c) orange-blue-red (d) blue-orange-red
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) blue-black-orange (b) blue-black-red (c) blue-black-brown (d) violet-blue-red
  8. 8.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does red stand for?
  10. 10.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32 Ω resistor? (a) orange-red-black (b) red-orange-black (c) orange-red-brown (d) yellow-red-black
  12. 12.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) red-violet-black (b) grey-red-black (c) violet-red-black (d) violet-red-brown
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9500 Ω resistor? (a) white-green-brown (b) white-green-orange (c) green-white-red (d) white-green-red
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92000 Ω resistor? (a) white-red-yellow (b) white-red-orange (c) white-red-red (d) red-white-orange
  17. 17.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 In the resistor colour code, which number does violet stand for?
  19. 19.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) orange-violet-orange (b) orange-violet-yellow (c) orange-violet-red (d) violet-orange-orange
  21. 21.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands violet, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) violet-black-black (b) grey-violet-black (c) grey-black-black (d) violet-black-brown
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 800 Ω resistor? (a) grey-black-black (b) white-grey-brown (c) grey-black-red (d) grey-black-brown
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) yellow-grey-black (b) grey-orange-black (c) orange-grey-brown (d) orange-grey-black
  27. 27.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands green, green, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands yellow, blue, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands white, black, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 In the resistor colour code, which number does brown stand for?
  35. 35.🌈 In the resistor colour code, which number does yellow stand for?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) green-violet-black (b) violet-green-brown (c) violet-green-black (d) grey-green-black
  37. 37.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does grey stand for?
  39. 39.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 5 %
  2. 8900
  3. 11
  4. 5
  5. the one nearest an end
  6. orange-blue-red
  7. blue-black-red
  8. 13
  9. 2
  10. 390
  11. orange-red-black
  12. 8400
  13. 2
  14. violet-red-black
  15. white-green-red
  16. white-red-orange
  17. 3.1
  18. 7
  19. 5700
  20. orange-violet-orange
  21. 2.7
  22. 74
  23. 54
  24. violet-black-black
  25. grey-black-brown
  26. orange-grey-black
  27. 990
  28. 550
  29. 46
  30. 3
  31. 8
  32. 450
  33. 900
  34. 1
  35. 4
  36. violet-green-black
  37. 410
  38. 8
  39. 510
  40. 7.1

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