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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 980 · 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, blue, red. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) green-red-black (b) yellow-red-brown (c) red-yellow-black (d) yellow-red-black
  3. 3.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does red stand for?
  5. 5.🌈 In the resistor colour code, which number does grey stand for?
  6. 6.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does black stand for?
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) violet-orange-black (b) yellow-violet-black (c) orange-violet-brown (d) orange-violet-black
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) green-black-red (b) green-black-yellow (c) blue-green-orange (d) green-black-orange
  11. 11.🌈 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
  12. 12.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4400 Ω resistor? (a) yellow-green-red (b) yellow-yellow-brown (c) yellow-yellow-red (d) yellow-yellow-orange
  14. 14.🌈 A resistor has the colour bands yellow, blue, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does white stand for?
  16. 16.🌈 A resistor has the colour bands green, violet, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does brown stand for?
  18. 18.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7000 Ω resistor? (a) grey-violet-red (b) violet-black-brown (c) violet-black-orange (d) violet-black-red
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) blue-red-red (b) blue-red-brown (c) blue-red-black (d) red-blue-brown
  21. 21.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does orange stand for?
  23. 23.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands grey, grey, brown. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does violet stand for?
  28. 28.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92000 Ω resistor? (a) red-white-orange (b) white-red-yellow (c) white-red-red (d) white-red-orange
  30. 30.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands grey, violet, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands green, orange, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 1600
  2. yellow-red-black
  3. 30
  4. 2
  5. 8
  6. 41000
  7. 0
  8. 5 %
  9. orange-violet-black
  10. green-black-orange
  11. the one nearest an end
  12. 67
  13. yellow-yellow-red
  14. 46
  15. 9
  16. 5.7
  17. 1
  18. 28000
  19. violet-black-red
  20. blue-red-brown
  21. 1.2
  22. 3
  23. 81
  24. 33
  25. 170
  26. 880
  27. 7
  28. 940
  29. white-red-orange
  30. 2.7
  31. 160
  32. 4
  33. 87
  34. 10
  35. 2.5
  36. 960
  37. 7100
  38. 24000
  39. 5.3
  40. 20

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