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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 820 · 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 colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) green-black-red (b) green-black-yellow (c) green-black-orange (d) blue-green-orange
  2. 2.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  5. 5.🌈 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
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  7. 7.🌈 A resistor has the colour bands yellow, blue, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands white, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91000 Ω resistor? (a) white-brown-red (b) brown-white-orange (c) white-brown-orange (d) white-brown-yellow
  10. 10.🌈 In the resistor colour code, which number does violet stand for?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) yellow-black-black (b) orange-black-black (c) orange-black-brown (d) yellow-orange-black
  12. 12.🌈 In the resistor colour code, which number does red stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5500 Ω resistor? (a) green-blue-red (b) green-green-red (c) green-green-orange (d) green-green-brown
  14. 14.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) brown-orange-black (b) white-orange-brown (c) orange-white-black (d) white-orange-black
  16. 16.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands grey, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 920 Ω resistor? (a) white-red-black (b) red-white-brown (c) white-red-brown (d) white-red-red
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) green-red-orange (b) red-green-orange (c) red-green-red (d) red-green-yellow
  20. 20.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) yellow-green-brown (b) green-yellow-black (c) yellow-green-black (d) green-green-black
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89 Ω resistor? (a) white-white-black (b) grey-white-black (c) grey-white-brown (d) white-grey-black
  23. 23.🌈 In the resistor colour code, which number does white stand for?
  24. 24.🌈 A resistor has the colour bands red, grey, red. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 610 Ω resistor? (a) blue-brown-red (b) brown-blue-brown (c) blue-brown-brown (d) blue-brown-black
  27. 27.🌈 A resistor has the colour bands white, red, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 In the resistor colour code, which number does brown stand for?
  29. 29.🌈 A resistor has the colour bands blue, blue, red. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1600 Ω resistor? (a) brown-blue-brown (b) blue-brown-red (c) brown-blue-red (d) brown-blue-orange
  31. 31.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  32. 32.🌈 In the resistor colour code, which number does blue stand for?
  33. 33.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 370 Ω resistor? (a) orange-violet-red (b) orange-violet-black (c) violet-orange-brown (d) orange-violet-brown
  35. 35.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 In the resistor colour code, which number does grey stand for?
  37. 37.🌈 In the resistor colour code, which number does yellow stand for?
  38. 38.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. green-black-orange
  2. 71
  3. 210
  4. 280
  5. the one nearest an end
  6. 5 %
  7. 46000
  8. 980
  9. white-brown-orange
  10. 7
  11. orange-black-black
  12. 2
  13. green-green-red
  14. 1000
  15. white-orange-black
  16. 82
  17. 830
  18. white-red-brown
  19. red-green-orange
  20. 8.4
  21. yellow-green-black
  22. grey-white-black
  23. 9
  24. 2800
  25. 720
  26. blue-brown-brown
  27. 92
  28. 1
  29. 6600
  30. brown-blue-red
  31. 77
  32. 6
  33. 80
  34. orange-violet-brown
  35. 340
  36. 8
  37. 4
  38. 170
  39. 19
  40. 22

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