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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 929 · 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 grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 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
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 750 Ω resistor? (a) violet-green-black (b) violet-green-red (c) violet-green-brown (d) green-violet-brown
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4000 Ω resistor? (a) yellow-black-orange (b) yellow-black-red (c) green-yellow-red (d) yellow-black-brown
  8. 8.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) green-brown-brown (b) brown-green-black (c) green-brown-black (d) blue-brown-black
  10. 10.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands grey, yellow, orange. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does white stand for?
  13. 13.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does orange stand for?
  15. 15.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands grey, green, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does violet stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-brown (b) red-orange-black (c) orange-red-brown (d) red-orange-red
  19. 19.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 940 Ω resistor? (a) white-yellow-black (b) white-yellow-brown (c) yellow-white-brown (d) white-yellow-red
  22. 22.🌈 In the resistor colour code, which number does brown stand for?
  23. 23.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does red stand for?
  28. 28.🌈 In the resistor colour code, which number does black stand for?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65000 Ω resistor? (a) blue-green-yellow (b) green-blue-orange (c) blue-green-red (d) blue-green-orange
  30. 30.🌈 A resistor has the colour bands orange, orange, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does blue stand for?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-red (b) red-grey-brown (c) grey-red-brown (d) red-grey-black
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) violet-brown-brown (b) violet-brown-orange (c) violet-brown-red (d) brown-violet-red
  37. 37.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 In the resistor colour code, which number does yellow stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90000 Ω resistor? (a) brown-white-orange (b) white-black-red (c) white-black-orange (d) white-black-yellow
  40. 40.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?

Answer key

  1. 82
  2. 8200
  3. 2.2
  4. the one nearest an end
  5. violet-green-brown
  6. 5 %
  7. yellow-black-red
  8. 910
  9. green-brown-black
  10. 12000
  11. 84000
  12. 9
  13. 28000
  14. 3
  15. 11
  16. 850
  17. 7
  18. red-orange-brown
  19. 230
  20. 81000
  21. white-yellow-brown
  22. 1
  23. 500
  24. 16
  25. 290
  26. 5000
  27. 2
  28. 0
  29. blue-green-orange
  30. 33000
  31. 6500
  32. 400
  33. 30
  34. 6
  35. red-grey-brown
  36. violet-brown-red
  37. 15
  38. 4
  39. white-black-orange
  40. 940

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