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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 839 · 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 red, violet, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9800 Ω resistor? (a) white-grey-orange (b) grey-white-red (c) white-grey-brown (d) white-grey-red
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5300 Ω resistor? (a) orange-green-red (b) green-orange-orange (c) green-orange-brown (d) green-orange-red
  4. 4.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-brown (b) yellow-brown-black (c) brown-orange-black (d) orange-brown-black
  6. 6.🌈 In the resistor colour code, which number does grey stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89000 Ω resistor? (a) grey-white-yellow (b) grey-white-orange (c) white-grey-orange (d) grey-white-red
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) green-brown-black (b) green-brown-red (c) brown-green-brown (d) green-brown-brown
  9. 9.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) the one nearest an end (d) any band
  10. 10.🌈 A resistor has the colour bands white, yellow, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6900 Ω resistor? (a) white-blue-red (b) blue-white-red (c) blue-white-brown (d) blue-white-orange
  12. 12.🌈 In the resistor colour code, which number does green stand for?
  13. 13.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  15. 15.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands white, red, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does red stand for?
  18. 18.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  19. 19.🌈 In the resistor colour code, which number does black stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71000 Ω resistor? (a) violet-brown-orange (b) violet-brown-red (c) brown-violet-orange (d) violet-brown-yellow
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5800 Ω resistor? (a) grey-green-red (b) green-grey-orange (c) green-grey-brown (d) green-grey-red
  22. 22.🌈 A resistor has the colour bands grey, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does yellow stand for?
  25. 25.🌈 In the resistor colour code, which number does violet stand for?
  26. 26.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, white, red. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1700 Ω resistor? (a) brown-violet-red (b) brown-violet-orange (c) violet-brown-red (d) brown-violet-brown
  29. 29.🌈 A resistor has the colour bands grey, blue, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands blue, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-brown (b) red-red-black (c) red-orange-brown (d) red-red-red
  32. 32.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) red-orange-orange (b) orange-red-red (c) red-orange-red (d) red-orange-brown
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) white-grey-black (b) white-grey-brown (c) grey-white-black (d) brown-grey-black
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45000 Ω resistor? (a) yellow-green-red (b) green-yellow-orange (c) yellow-green-orange (d) yellow-green-yellow
  37. 37.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands orange, yellow, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?

Answer key

  1. 2.7
  2. white-grey-red
  3. green-orange-red
  4. 73
  5. orange-brown-black
  6. 8
  7. grey-white-orange
  8. green-brown-brown
  9. the one nearest an end
  10. 9.4
  11. blue-white-red
  12. 5
  13. 63
  14. 5 %
  15. 21
  16. 92
  17. 2
  18. 54000
  19. 0
  20. violet-brown-orange
  21. green-grey-red
  22. 880
  23. 3.7
  24. 4
  25. 7
  26. 3000
  27. 1900
  28. brown-violet-red
  29. 860
  30. 640
  31. red-red-brown
  32. 98000
  33. 2400
  34. red-orange-red
  35. white-grey-black
  36. yellow-green-orange
  37. 780
  38. 11000
  39. 340
  40. 5100

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