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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 915 · 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 red, orange, black. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) red-brown-orange (b) brown-black-orange (c) brown-black-red (d) brown-black-yellow
  3. 3.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands brown, white, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3700 Ω resistor? (a) orange-violet-red (b) orange-violet-brown (c) violet-orange-red (d) orange-violet-orange
  6. 6.🌈 In the resistor colour code, which number does blue stand for?
  7. 7.🌈 In the resistor colour code, which number does green stand for?
  8. 8.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does white stand for?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  11. 11.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) the one nearest an end (d) any band
  12. 12.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  18. 18.🌈 In the resistor colour code, which number does yellow stand for?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) yellow-black-brown (b) green-black-black (c) yellow-black-black (d) green-yellow-black
  20. 20.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does violet stand for?
  23. 23.🌈 A resistor has the colour bands grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does brown stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) blue-red-red (b) blue-red-brown (c) red-blue-red (d) blue-red-orange
  27. 27.🌈 A resistor has the colour bands green, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27 Ω resistor? (a) red-violet-brown (b) violet-red-black (c) orange-violet-black (d) red-violet-black
  29. 29.🌈 A resistor has the colour bands blue, grey, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands blue, red, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) blue-green-black (b) green-black-brown (c) green-black-black (d) blue-black-black
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22000 Ω resistor? (a) red-red-yellow (b) red-red-red (c) red-orange-orange (d) red-red-orange
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 790 Ω resistor? (a) white-violet-brown (b) violet-white-brown (c) violet-white-red (d) violet-white-black
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 390 Ω resistor? (a) white-orange-brown (b) orange-white-black (c) orange-white-brown (d) orange-white-red
  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 yellow, yellow, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 310 Ω resistor? (a) orange-brown-red (b) brown-orange-brown (c) orange-brown-brown (d) orange-brown-black

Answer key

  1. 23
  2. brown-black-orange
  3. 830
  4. 19
  5. orange-violet-red
  6. 6
  7. 5
  8. 32
  9. 9
  10. 5 %
  11. the one nearest an end
  12. 4.4
  13. 170
  14. 400
  15. 80
  16. 6300
  17. 71000
  18. 4
  19. yellow-black-black
  20. 22
  21. 45000
  22. 7
  23. 800
  24. 21
  25. 1
  26. blue-red-red
  27. 560
  28. red-violet-black
  29. 6800
  30. 220
  31. 9900
  32. 62
  33. 2.8
  34. green-black-black
  35. red-red-orange
  36. violet-white-brown
  37. orange-white-brown
  38. 7.4
  39. 44000
  40. orange-brown-brown

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