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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 994 · 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, grey, brown. What is its value (in ohms)?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 50 % (d) 0 %
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) blue-brown-orange (b) blue-brown-yellow (c) blue-brown-red (d) brown-blue-orange
  4. 4.🌈 In the resistor colour code, which number does yellow stand for?
  5. 5.🌈 In the resistor colour code, which number does black stand for?
  6. 6.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  7. 7.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3200 Ω resistor? (a) orange-red-brown (b) orange-red-red (c) orange-red-orange (d) red-orange-red
  12. 12.🌈 In the resistor colour code, which number does blue stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5200 Ω resistor? (a) green-red-orange (b) green-red-brown (c) green-red-red (d) red-green-red
  14. 14.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does grey stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57000 Ω resistor? (a) violet-green-orange (b) green-violet-yellow (c) green-violet-red (d) green-violet-orange
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 100 Ω resistor? (a) brown-black-brown (b) brown-black-black (c) red-brown-brown (d) brown-black-red
  18. 18.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 520 Ω resistor? (a) green-red-red (b) green-red-black (c) red-green-brown (d) green-red-brown
  20. 20.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-red-brown (b) brown-brown-black (c) brown-brown-brown (d) brown-brown-red
  22. 22.🌈 A resistor has the colour bands orange, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) red-black-red (b) red-black-black (c) red-black-brown (d) orange-red-brown
  26. 26.🌈 In the resistor colour code, which number does brown stand for?
  27. 27.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-orange-black (b) orange-red-black (c) red-red-brown (d) red-red-black
  30. 30.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) violet-orange-orange (b) violet-orange-yellow (c) orange-violet-orange (d) violet-orange-red
  32. 32.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) brown-red-black (b) red-brown-black (c) red-brown-brown (d) orange-brown-black
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) blue-violet-brown (b) violet-blue-red (c) violet-blue-black (d) violet-blue-brown
  37. 37.🌈 In the resistor colour code, which number does white stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57 Ω resistor? (a) violet-green-black (b) green-violet-black (c) green-violet-brown (d) blue-violet-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33 Ω resistor? (a) yellow-orange-black (b) orange-orange-brown (c) orange-orange-black (d) orange-yellow-black
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) orange-orange-black (b) orange-red-black (c) red-orange-brown (d) red-orange-black

Answer key

  1. 880
  2. 5 %
  3. blue-brown-orange
  4. 4
  5. 0
  6. the one nearest an end
  7. 80
  8. 4
  9. 2
  10. 6400
  11. orange-red-red
  12. 6
  13. green-red-red
  14. 2.7
  15. 8
  16. green-violet-orange
  17. brown-black-brown
  18. 3.9
  19. green-red-brown
  20. 24
  21. brown-brown-brown
  22. 370
  23. 820
  24. 9100
  25. red-black-brown
  26. 1
  27. 7.4
  28. 35000
  29. red-red-black
  30. 14000
  31. violet-orange-orange
  32. 3300
  33. 31
  34. 1.5
  35. red-brown-black
  36. violet-blue-brown
  37. 9
  38. green-violet-black
  39. orange-orange-black
  40. red-orange-black

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