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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 751 · 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 12 Ω resistor? (a) brown-red-black (b) brown-red-brown (c) red-red-black (d) red-brown-black
  2. 2.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  3. 3.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 In the resistor colour code, which number does red stand for?
  7. 7.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 570 Ω resistor? (a) green-violet-red (b) green-violet-brown (c) green-violet-black (d) violet-green-brown
  9. 9.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 In the resistor colour code, which number does grey stand for?
  11. 11.🌈 A resistor has the colour bands blue, black, red. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) blue-green-orange (b) green-black-red (c) green-black-orange (d) green-black-yellow
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66 Ω resistor? (a) blue-blue-black (b) blue-violet-black (c) blue-blue-brown (d) violet-blue-black
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) brown-black-red (b) brown-black-orange (c) brown-black-brown (d) red-brown-red
  15. 15.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  17. 17.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  18. 18.🌈 A resistor has the colour bands white, violet, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does orange stand for?
  21. 21.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-black (b) red-white-brown (c) white-red-brown (d) red-white-red
  24. 24.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands orange, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 In the resistor colour code, which number does green stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72000 Ω resistor? (a) violet-red-orange (b) violet-red-red (c) red-violet-orange (d) violet-red-yellow
  28. 28.🌈 A resistor has the colour bands green, red, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24 Ω resistor? (a) yellow-red-black (b) red-yellow-black (c) orange-yellow-black (d) red-yellow-brown
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8200 Ω resistor? (a) grey-red-brown (b) red-grey-red (c) grey-red-orange (d) grey-red-red
  31. 31.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27 Ω resistor? (a) orange-violet-black (b) red-violet-black (c) red-violet-brown (d) violet-red-black
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 130 Ω resistor? (a) orange-brown-brown (b) brown-orange-black (c) brown-orange-brown (d) brown-orange-red
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) orange-brown-black (b) yellow-brown-black (c) orange-brown-brown (d) brown-orange-black
  35. 35.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does blue stand for?
  37. 37.🌈 A resistor has the colour bands green, grey, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, red, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands green, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. brown-red-black
  2. the one nearest an end
  3. 980
  4. 510
  5. 8.3
  6. 2
  7. 7.9
  8. green-violet-brown
  9. 760
  10. 8
  11. 6000
  12. green-black-orange
  13. blue-blue-black
  14. brown-black-red
  15. 2.4
  16. 890
  17. 5 %
  18. 97
  19. 30
  20. 3
  21. 1400
  22. 600
  23. red-white-brown
  24. 170
  25. 330
  26. 5
  27. violet-red-orange
  28. 52
  29. red-yellow-black
  30. grey-red-red
  31. 69
  32. red-violet-black
  33. brown-orange-brown
  34. orange-brown-black
  35. 62
  36. 6
  37. 580
  38. 42
  39. 560
  40. 410

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