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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 762 · 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.🌈 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
  2. 2.🌈 In the resistor colour code, which number does white stand for?
  3. 3.🌈 A resistor has the colour bands violet, white, orange. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands violet, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands yellow, violet, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 50 % (d) 0 %
  9. 9.🌈 In the resistor colour code, which number does black stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) brown-black-orange (b) brown-black-brown (c) brown-black-red (d) red-brown-red
  11. 11.🌈 A resistor has the colour bands white, violet, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7300 Ω resistor? (a) orange-violet-red (b) violet-orange-red (c) violet-orange-brown (d) violet-orange-orange
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 570 Ω resistor? (a) violet-green-brown (b) green-violet-red (c) green-violet-brown (d) green-violet-black
  16. 16.🌈 In the resistor colour code, which number does green stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 100 Ω resistor? (a) red-brown-brown (b) brown-black-black (c) brown-black-brown (d) brown-black-red
  18. 18.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31000 Ω resistor? (a) brown-orange-orange (b) orange-brown-yellow (c) orange-brown-orange (d) orange-brown-red
  20. 20.🌈 In the resistor colour code, which number does blue stand for?
  21. 21.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40000 Ω resistor? (a) yellow-black-yellow (b) yellow-black-orange (c) yellow-black-red (d) green-yellow-orange
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) orange-black-black (b) yellow-black-black (c) yellow-orange-black (d) orange-black-brown
  24. 24.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands blue, green, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) yellow-orange-black (b) orange-yellow-brown (c) yellow-yellow-black (d) orange-yellow-black
  30. 30.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands violet, white, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-white-brown (b) white-white-red (c) white-black-red (d) white-white-orange
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) red-black-brown (b) red-black-black (c) orange-black-black (d) orange-red-black
  37. 37.🌈 A resistor has the colour bands green, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands blue, violet, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. the one nearest an end
  2. 9
  3. 79000
  4. 74
  5. 47000
  6. 8800
  7. 810
  8. 5 %
  9. 0
  10. brown-black-red
  11. 97
  12. 280
  13. 7000
  14. violet-orange-red
  15. green-violet-brown
  16. 5
  17. brown-black-brown
  18. 38
  19. orange-brown-orange
  20. 6
  21. 1700
  22. yellow-black-orange
  23. orange-black-black
  24. 27000
  25. 650
  26. 9.2
  27. 320
  28. 16
  29. orange-yellow-black
  30. 91000
  31. 39000
  32. 79
  33. 90
  34. 1.6
  35. white-white-red
  36. red-black-black
  37. 54
  38. 67000
  39. 1.1
  40. 27

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