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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 914 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-brown (b) red-violet-red (c) violet-red-brown (d) red-violet-black
  2. 2.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  6. 6.🌈 In the resistor colour code, which number does blue stand for?
  7. 7.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5100 Ω resistor? (a) brown-green-red (b) green-brown-brown (c) green-brown-orange (d) green-brown-red
  9. 9.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) grey-violet-red (b) violet-grey-orange (c) violet-grey-brown (d) violet-grey-red
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1500 Ω resistor? (a) brown-green-brown (b) brown-green-orange (c) brown-green-red (d) green-brown-red
  12. 12.🌈 In the resistor colour code, which number does black stand for?
  13. 13.🌈 In the resistor colour code, which number does violet stand for?
  14. 14.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89000 Ω resistor? (a) white-grey-orange (b) grey-white-yellow (c) grey-white-red (d) grey-white-orange
  18. 18.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands green, orange, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9500 Ω resistor? (a) white-green-orange (b) green-white-red (c) white-green-red (d) white-green-brown
  21. 21.🌈 In the resistor colour code, which number does green stand for?
  22. 22.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1700 Ω resistor? (a) violet-brown-red (b) brown-violet-red (c) brown-violet-brown (d) brown-violet-orange
  25. 25.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96 Ω resistor? (a) white-blue-brown (b) blue-white-black (c) brown-blue-black (d) white-blue-black
  27. 27.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 780 Ω resistor? (a) grey-violet-brown (b) violet-grey-red (c) violet-grey-brown (d) violet-grey-black
  29. 29.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) violet-orange-orange (b) orange-violet-orange (c) orange-violet-red (d) orange-violet-yellow
  31. 31.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 330 Ω resistor? (a) orange-yellow-brown (b) orange-orange-black (c) orange-orange-brown (d) orange-orange-red
  35. 35.🌈 In the resistor colour code, which number does brown stand for?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 360 Ω resistor? (a) orange-blue-black (b) blue-orange-brown (c) orange-blue-brown (d) orange-blue-red
  37. 37.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66 Ω resistor? (a) blue-blue-brown (b) blue-blue-black (c) violet-blue-black (d) blue-violet-black

Answer key

  1. red-violet-brown
  2. 46
  3. 28000
  4. 81
  5. 5 %
  6. 6
  7. the one nearest an end
  8. green-brown-red
  9. 960
  10. violet-grey-red
  11. brown-green-red
  12. 0
  13. 7
  14. 620
  15. 4.4
  16. 2900
  17. grey-white-orange
  18. 50000
  19. 5300
  20. white-green-red
  21. 5
  22. 600
  23. 320
  24. brown-violet-red
  25. 360
  26. white-blue-black
  27. 280
  28. violet-grey-brown
  29. 540
  30. orange-violet-orange
  31. 910
  32. 9.9
  33. 8.1
  34. orange-orange-brown
  35. 1
  36. orange-blue-brown
  37. 76
  38. 18
  39. 620
  40. blue-blue-black

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