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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 831 · 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 white stand for?
  2. 2.🌈 In the resistor colour code, which number does red stand for?
  3. 3.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does black stand for?
  5. 5.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 50 % (d) 25 %
  7. 7.🌈 In the resistor colour code, which number does green stand for?
  8. 8.🌈 In the resistor colour code, which number does violet stand for?
  9. 9.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the gold band (d) the one nearest an end
  11. 11.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) red-green-black (b) green-red-black (c) orange-green-black (d) red-green-brown
  13. 13.🌈 In the resistor colour code, which number does blue stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7000 Ω resistor? (a) violet-black-brown (b) violet-black-red (c) grey-violet-red (d) violet-black-orange
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11000 Ω resistor? (a) brown-brown-yellow (b) brown-red-orange (c) brown-brown-red (d) brown-brown-orange
  16. 16.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) red-brown-red (b) red-brown-brown (c) red-brown-black (d) brown-red-brown
  19. 19.🌈 In the resistor colour code, which number does orange stand for?
  20. 20.🌈 In the resistor colour code, which number does grey stand for?
  21. 21.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4900 Ω resistor? (a) yellow-white-brown (b) yellow-white-red (c) yellow-white-orange (d) white-yellow-red
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) blue-red-black (b) red-blue-brown (c) blue-red-red (d) blue-red-brown
  24. 24.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands brown, violet, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does brown stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) yellow-green-black (b) green-yellow-black (c) green-green-black (d) yellow-green-brown
  29. 29.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) red-brown-orange (b) brown-black-yellow (c) brown-black-orange (d) brown-black-red
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) violet-blue-red (b) blue-black-red (c) blue-black-orange (d) blue-black-brown
  35. 35.🌈 A resistor has the colour bands yellow, black, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9200 Ω resistor? (a) white-red-brown (b) red-white-red (c) white-red-orange (d) white-red-red
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) brown-grey-red (b) grey-brown-brown (c) brown-grey-black (d) brown-grey-brown

Answer key

  1. 9
  2. 2
  3. 640
  4. 0
  5. 990
  6. 5 %
  7. 5
  8. 7
  9. 2
  10. the one nearest an end
  11. 59
  12. red-green-black
  13. 6
  14. violet-black-red
  15. brown-brown-orange
  16. 910
  17. 21
  18. red-brown-brown
  19. 3
  20. 8
  21. 60
  22. yellow-white-red
  23. blue-red-brown
  24. 490
  25. 17
  26. 260
  27. 1
  28. yellow-green-black
  29. 62000
  30. 220
  31. 1.5
  32. 600
  33. brown-black-orange
  34. blue-black-red
  35. 400
  36. 61000
  37. 920
  38. 81000
  39. white-red-red
  40. brown-grey-brown

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