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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 928 · 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.🌈 In the resistor colour code, which number does blue stand for?
  2. 2.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3900 Ω resistor? (a) orange-white-brown (b) orange-white-orange (c) orange-white-red (d) white-orange-red
  7. 7.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71 Ω resistor? (a) violet-brown-black (b) grey-brown-black (c) brown-violet-black (d) violet-brown-brown
  9. 9.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands violet, blue, brown. What is its value (in ohms)?
  11. 11.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  12. 12.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 50 % (d) 0 %
  15. 15.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does yellow stand for?
  18. 18.🌈 A resistor has the colour bands blue, black, red. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 950 Ω resistor? (a) white-green-red (b) white-green-black (c) white-green-brown (d) green-white-brown
  20. 20.🌈 In the resistor colour code, which number does green stand for?
  21. 21.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) red-violet-red (b) violet-red-red (c) violet-red-orange (d) violet-red-brown
  23. 23.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does black stand for?
  25. 25.🌈 In the resistor colour code, which number does violet stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) orange-yellow-brown (b) yellow-orange-black (c) yellow-yellow-black (d) orange-yellow-black
  27. 27.🌈 A resistor has the colour bands violet, violet, orange. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62 Ω resistor? (a) blue-red-brown (b) violet-red-black (c) blue-red-black (d) red-blue-black
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) green-grey-black (b) grey-green-brown (c) grey-green-black (d) white-green-black
  30. 30.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does brown stand for?
  32. 32.🌈 In the resistor colour code, which number does white stand for?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) orange-grey-brown (b) grey-orange-black (c) yellow-grey-black (d) orange-grey-black
  34. 34.🌈 A resistor has the colour bands green, violet, brown. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) red-green-brown (b) orange-green-black (c) green-red-black (d) red-green-black
  36. 36.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands yellow, blue, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 6
  2. 30
  3. 27
  4. 2.8
  5. 6100
  6. orange-white-red
  7. 9.8
  8. violet-brown-black
  9. 740
  10. 760
  11. the one nearest an end
  12. 31000
  13. 1000
  14. 5 %
  15. 290
  16. 4.1
  17. 4
  18. 6000
  19. white-green-brown
  20. 5
  21. 3600
  22. violet-red-red
  23. 110
  24. 0
  25. 7
  26. orange-yellow-black
  27. 77000
  28. blue-red-black
  29. grey-green-black
  30. 29
  31. 1
  32. 9
  33. orange-grey-black
  34. 570
  35. red-green-black
  36. 620
  37. 520
  38. 31
  39. 690
  40. 46

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