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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 870 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) violet-brown-black (b) brown-blue-black (c) blue-brown-black (d) blue-brown-brown
  3. 3.🌈 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
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-orange-black (b) red-red-black (c) orange-red-black (d) red-red-brown
  5. 5.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) white-red-brown (b) red-white-red (c) red-white-black (d) red-white-brown
  7. 7.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
  11. 11.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56 Ω resistor? (a) blue-green-black (b) green-blue-brown (c) green-blue-black (d) blue-blue-black
  15. 15.🌈 In the resistor colour code, which number does black stand for?
  16. 16.🌈 In the resistor colour code, which number does violet stand for?
  17. 17.🌈 In the resistor colour code, which number does blue stand for?
  18. 18.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands white, blue, red. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 In the resistor colour code, which number does red stand for?
  23. 23.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands white, yellow, red. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does orange stand for?
  26. 26.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands blue, grey, orange. What is its value (in ohms)?
  28. 28.🌈 In the resistor colour code, which number does white stand for?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-red (b) red-red-orange (c) red-red-brown (d) red-orange-red
  30. 30.🌈 A resistor has the colour bands yellow, black, brown. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does green stand for?
  32. 32.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does grey stand for?
  39. 39.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?

Answer key

  1. 140
  2. blue-brown-black
  3. the one nearest an end
  4. red-red-black
  5. 67
  6. red-white-brown
  7. 190
  8. 230
  9. 390
  10. 5 %
  11. 1100
  12. 14
  13. 6300
  14. green-blue-black
  15. 0
  16. 7
  17. 6
  18. 220
  19. 6.9
  20. 9600
  21. 1
  22. 2
  23. 6900
  24. 9400
  25. 3
  26. 600
  27. 68000
  28. 9
  29. red-red-red
  30. 400
  31. 5
  32. 300
  33. 730
  34. 30000
  35. 19
  36. 73
  37. 900
  38. 8
  39. 23
  40. 53

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