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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 938 · 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 green stand for?
  2. 2.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) brown-green-red (b) brown-green-yellow (c) green-brown-orange (d) brown-green-orange
  4. 4.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  5. 5.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does violet stand for?
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  8. 8.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 600 Ω resistor? (a) violet-blue-brown (b) blue-black-red (c) blue-black-black (d) blue-black-brown
  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 green, black, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands yellow, yellow, brown. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) grey-black-black (b) grey-black-brown (c) white-black-black (d) white-grey-black
  15. 15.🌈 A resistor has the colour bands red, grey, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-black-black (b) orange-red-black (c) red-black-brown (d) red-black-black
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) green-red-black (b) red-green-black (c) orange-green-black (d) red-green-brown
  19. 19.🌈 In the resistor colour code, which number does grey stand for?
  20. 20.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) green-grey-brown (b) grey-green-brown (c) green-grey-red (d) green-grey-black
  22. 22.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68 Ω resistor? (a) grey-blue-black (b) violet-grey-black (c) blue-grey-black (d) blue-grey-brown
  24. 24.🌈 In the resistor colour code, which number does yellow stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44000 Ω resistor? (a) yellow-yellow-red (b) yellow-yellow-yellow (c) yellow-yellow-orange (d) yellow-green-orange
  26. 26.🌈 In the resistor colour code, which number does black stand for?
  27. 27.🌈 In the resistor colour code, which number does orange stand for?
  28. 28.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) brown-white-red (b) white-brown-brown (c) brown-white-brown (d) brown-white-black
  32. 32.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does brown stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) green-brown-black (b) brown-green-brown (c) green-brown-brown (d) green-brown-red
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90000 Ω resistor? (a) brown-white-orange (b) white-black-red (c) white-black-orange (d) white-black-yellow
  36. 36.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) brown-yellow-brown (b) brown-yellow-red (c) yellow-brown-brown (d) brown-yellow-black

Answer key

  1. 5
  2. 18000
  3. brown-green-orange
  4. the one nearest an end
  5. 94
  6. 7
  7. 5 %
  8. 160
  9. 9.1
  10. blue-black-brown
  11. 1100
  12. 50000
  13. 440
  14. grey-black-black
  15. 28
  16. 69
  17. red-black-black
  18. red-green-black
  19. 8
  20. 1500
  21. green-grey-brown
  22. 170
  23. blue-grey-black
  24. 4
  25. yellow-yellow-orange
  26. 0
  27. 3
  28. 2
  29. 500
  30. 97
  31. brown-white-brown
  32. 90
  33. 1
  34. green-brown-brown
  35. white-black-orange
  36. 290
  37. 14
  38. 2.2
  39. 49
  40. brown-yellow-brown

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