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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 823 · 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 an 88 Ω resistor? (a) grey-white-black (b) white-grey-black (c) grey-grey-black (d) grey-grey-brown
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12000 Ω resistor? (a) red-brown-orange (b) brown-red-orange (c) brown-red-red (d) brown-red-yellow
  3. 3.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  5. 5.🌈 In the resistor colour code, which number does yellow stand for?
  6. 6.🌈 A resistor has the colour bands yellow, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) red-green-black (b) red-green-brown (c) green-red-brown (d) red-green-red
  8. 8.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 880 Ω resistor? (a) grey-grey-black (b) grey-white-brown (c) grey-grey-brown (d) grey-grey-red
  11. 11.🌈 A resistor has the colour bands grey, red, black. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) red-blue-brown (b) blue-red-black (c) blue-red-brown (d) blue-red-red
  13. 13.🌈 In the resistor colour code, which number does blue stand for?
  14. 14.🌈 In the resistor colour code, which number does black stand for?
  15. 15.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55 Ω resistor? (a) blue-green-black (b) green-green-brown (c) green-green-black (d) green-blue-black
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 630 Ω resistor? (a) orange-blue-brown (b) blue-orange-black (c) blue-orange-red (d) blue-orange-brown
  18. 18.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 In the resistor colour code, which number does red stand for?
  20. 20.🌈 In the resistor colour code, which number does orange stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57000 Ω resistor? (a) green-violet-red (b) violet-green-orange (c) green-violet-yellow (d) green-violet-orange
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-red (b) green-red-red (c) red-green-brown (d) red-green-orange
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) blue-black-black (b) green-black-brown (c) blue-green-black (d) green-black-black
  24. 24.🌈 A resistor has the colour bands grey, orange, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29000 Ω resistor? (a) white-red-orange (b) red-white-red (c) red-white-orange (d) red-white-yellow
  28. 28.🌈 A resistor has the colour bands blue, green, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) yellow-orange-brown (b) green-orange-black (c) yellow-orange-black (d) orange-yellow-black
  31. 31.🌈 A resistor has the colour bands yellow, green, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) blue-brown-black (b) green-brown-brown (c) brown-green-black (d) green-brown-black
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-orange (b) red-black-yellow (c) red-black-red (d) orange-red-orange
  35. 35.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does violet stand for?
  39. 39.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) red-orange-orange (b) red-orange-brown (c) red-orange-red (d) orange-red-red

Answer key

  1. grey-grey-black
  2. brown-red-orange
  3. 110
  4. 5 %
  5. 4
  6. 480
  7. red-green-brown
  8. 23
  9. the one nearest an end
  10. grey-grey-brown
  11. 82
  12. blue-red-brown
  13. 6
  14. 0
  15. 410
  16. green-green-black
  17. blue-orange-brown
  18. 220
  19. 2
  20. 3
  21. green-violet-orange
  22. red-green-red
  23. green-black-black
  24. 830
  25. 500
  26. 23000
  27. red-white-orange
  28. 65000
  29. 200
  30. yellow-orange-black
  31. 4500
  32. 47
  33. green-brown-black
  34. red-black-orange
  35. 38
  36. 94000
  37. 29
  38. 7
  39. 230
  40. red-orange-red

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