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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 869 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-orange (b) red-orange-red (c) red-red-brown (d) red-red-red
  2. 2.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
  3. 3.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does blue stand for?
  6. 6.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does white stand for?
  10. 10.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands grey, green, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) orange-violet-black (b) violet-orange-black (c) grey-orange-black (d) violet-orange-brown
  17. 17.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-violet-black (b) violet-black-brown (c) violet-black-black (d) grey-black-black
  19. 19.🌈 In the resistor colour code, which number does orange stand for?
  20. 20.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands white, blue, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2400 Ω resistor? (a) red-yellow-brown (b) red-yellow-orange (c) red-yellow-red (d) yellow-red-red
  24. 24.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  25. 25.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 In the resistor colour code, which number does green stand for?
  27. 27.🌈 In the resistor colour code, which number does black stand for?
  28. 28.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33 Ω resistor? (a) orange-yellow-black (b) orange-orange-black (c) yellow-orange-black (d) orange-orange-brown
  30. 30.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does grey stand for?
  33. 33.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does brown stand for?
  37. 37.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?

Answer key

  1. red-red-red
  2. the one nearest an end
  3. 23
  4. 64
  5. 6
  6. 66
  7. 2.3
  8. 43
  9. 9
  10. 23
  11. 8.4
  12. 53000
  13. 650
  14. 850
  15. 2100
  16. violet-orange-black
  17. 30
  18. violet-black-black
  19. 3
  20. 200
  21. 960
  22. 26
  23. red-yellow-red
  24. 5 %
  25. 6.5
  26. 5
  27. 0
  28. 50
  29. orange-orange-black
  30. 6300
  31. 70
  32. 8
  33. 1800
  34. 8.2
  35. 25
  36. 1
  37. 160
  38. 590
  39. 8100
  40. 110

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