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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 824 · 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 green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  4. 4.🌈 In the resistor colour code, which number does violet stand for?
  5. 5.🌈 In the resistor colour code, which number does black stand for?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2700 Ω resistor? (a) red-violet-brown (b) violet-red-red (c) red-violet-red (d) red-violet-orange
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) violet-brown-black (b) brown-blue-black (c) blue-brown-black (d) blue-brown-brown
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) grey-grey-black (b) violet-grey-brown (c) grey-violet-black (d) violet-grey-black
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  10. 10.🌈 A resistor has the colour bands grey, orange, red. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6800 Ω resistor? (a) blue-grey-orange (b) blue-grey-brown (c) blue-grey-red (d) grey-blue-red
  13. 13.🌈 In the resistor colour code, which number does green stand for?
  14. 14.🌈 A resistor has the colour bands orange, blue, orange. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) grey-black-brown (b) white-black-black (c) grey-black-black (d) white-grey-black
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95 Ω resistor? (a) white-green-brown (b) green-white-black (c) white-green-black (d) brown-green-black
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) violet-white-black (b) grey-white-black (c) violet-white-brown (d) white-violet-black
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 46000 Ω resistor? (a) yellow-blue-orange (b) blue-yellow-orange (c) yellow-blue-yellow (d) yellow-blue-red
  23. 23.🌈 A resistor has the colour bands grey, violet, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, brown, black. 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 brown, green, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 In the resistor colour code, which number does white stand for?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 100 Ω resistor? (a) brown-black-black (b) brown-black-red (c) red-brown-brown (d) brown-black-brown
  30. 30.🌈 A resistor has the colour bands violet, green, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) orange-violet-black (b) violet-orange-black (c) violet-orange-brown (d) grey-orange-black
  37. 37.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 300 Ω resistor? (a) orange-black-brown (b) yellow-orange-brown (c) orange-black-black (d) orange-black-red
  39. 39.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 520
  2. 210
  3. the one nearest an end
  4. 7
  5. 0
  6. red-violet-red
  7. blue-brown-black
  8. violet-grey-black
  9. 5 %
  10. 8300
  11. 50
  12. blue-grey-red
  13. 5
  14. 36000
  15. 30
  16. 66
  17. 9.8
  18. 73
  19. grey-black-black
  20. white-green-black
  21. violet-white-black
  22. yellow-blue-orange
  23. 870
  24. 11
  25. 2
  26. 1500
  27. 120
  28. 9
  29. brown-black-brown
  30. 75
  31. 920
  32. 3.7
  33. 7100
  34. 29
  35. 52
  36. violet-orange-black
  37. 200
  38. orange-black-brown
  39. 7.6
  40. 8.8

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