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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 959 · 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 band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  2. 2.🌈 In the resistor colour code, which number does violet stand for?
  3. 3.🌈 A resistor has the colour bands green, yellow, red. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does grey stand for?
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 50 % (d) 25 %
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-orange-red (b) orange-orange-brown (c) orange-yellow-red (d) orange-orange-orange
  7. 7.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) violet-green-black (b) violet-green-brown (c) grey-green-black (d) green-violet-black
  14. 14.🌈 A resistor has the colour bands blue, white, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26 Ω resistor? (a) red-blue-brown (b) orange-blue-black (c) blue-red-black (d) red-blue-black
  18. 18.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does blue stand for?
  24. 24.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77 Ω resistor? (a) grey-violet-black (b) violet-violet-brown (c) violet-grey-black (d) violet-violet-black
  27. 27.🌈 A resistor has the colour bands grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 In the resistor colour code, which number does black stand for?
  29. 29.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
  30. 30.🌈 In the resistor colour code, which number does white stand for?
  31. 31.🌈 In the resistor colour code, which number does green stand for?
  32. 32.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 850 Ω resistor? (a) grey-green-black (b) grey-green-brown (c) grey-green-red (d) green-grey-brown
  36. 36.🌈 In the resistor colour code, which number does red stand for?
  37. 37.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. 7
  3. 5400
  4. 8
  5. 5 %
  6. orange-orange-red
  7. 3.2
  8. 25
  9. 6200
  10. 59
  11. 84
  12. 70
  13. violet-green-black
  14. 69
  15. 20000
  16. 3.8
  17. red-blue-black
  18. 6
  19. 1000
  20. 77
  21. 150
  22. 800
  23. 6
  24. 3900
  25. 910
  26. violet-violet-black
  27. 800
  28. 0
  29. 260
  30. 9
  31. 5
  32. 510
  33. 11
  34. 11
  35. grey-green-brown
  36. 2
  37. 890
  38. 14
  39. 9000
  40. 6400

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