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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 954 · 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 grey, brown, black. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44000 Ω resistor? (a) yellow-yellow-orange (b) yellow-green-orange (c) yellow-yellow-red (d) yellow-yellow-yellow
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5100 Ω resistor? (a) brown-green-red (b) green-brown-red (c) green-brown-orange (d) green-brown-brown
  4. 4.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  5. 5.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does blue stand for?
  8. 8.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 50 % (d) 25 %
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) red-green-yellow (b) green-red-orange (c) red-green-red (d) red-green-orange
  12. 12.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) red-green-black (b) red-green-brown (c) green-red-black (d) orange-green-black
  14. 14.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does black stand for?
  16. 16.🌈 In the resistor colour code, which number does yellow stand for?
  17. 17.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5400 Ω resistor? (a) green-yellow-red (b) green-yellow-brown (c) yellow-green-red (d) green-yellow-orange
  19. 19.🌈 A resistor has the colour bands grey, brown, brown. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) red-grey-black (b) grey-red-black (c) red-grey-brown (d) orange-grey-black
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-black (b) orange-brown-black (c) brown-red-black (d) red-brown-brown
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92 Ω resistor? (a) red-white-black (b) white-red-brown (c) brown-red-black (d) white-red-black
  23. 23.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58000 Ω resistor? (a) green-grey-red (b) green-grey-orange (c) green-grey-yellow (d) grey-green-orange
  25. 25.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands yellow, blue, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands violet, blue, brown. What is its value (in ohms)?
  28. 28.🌈 In the resistor colour code, which number does green stand for?
  29. 29.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands white, red, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands blue, green, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands yellow, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands green, yellow, red. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8400 Ω resistor? (a) yellow-grey-red (b) grey-yellow-orange (c) grey-yellow-red (d) grey-yellow-brown
  38. 38.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does orange stand for?

Answer key

  1. 81
  2. yellow-yellow-orange
  3. green-brown-red
  4. the one nearest an end
  5. 1100
  6. 25
  7. 6
  8. 50000
  9. 67
  10. 5 %
  11. red-green-orange
  12. 17
  13. red-green-black
  14. 970
  15. 0
  16. 4
  17. 1.4
  18. green-yellow-red
  19. 810
  20. red-grey-black
  21. red-brown-black
  22. white-red-black
  23. 9.7
  24. green-grey-orange
  25. 7.1
  26. 46
  27. 760
  28. 5
  29. 920
  30. 12
  31. 92000
  32. 65
  33. 460
  34. 2.5
  35. 23000
  36. 5400
  37. grey-yellow-red
  38. 7.4
  39. 99
  40. 3

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