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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 749 · 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 orange, blue, brown. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does red stand for?
  3. 3.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 In the resistor colour code, which number does blue stand for?
  6. 6.🌈 In the resistor colour code, which number does green stand for?
  7. 7.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 In the resistor colour code, which number does brown stand for?
  9. 9.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
  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 250 Ω resistor? (a) red-green-red (b) green-red-brown (c) red-green-brown (d) red-green-black
  12. 12.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  14. 14.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands violet, violet, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does yellow stand for?
  17. 17.🌈 In the resistor colour code, which number does orange stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) yellow-red-red (b) yellow-red-orange (c) red-yellow-orange (d) yellow-red-yellow
  19. 19.🌈 In the resistor colour code, which number does black stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77000 Ω resistor? (a) violet-violet-orange (b) violet-violet-yellow (c) violet-grey-orange (d) violet-violet-red
  21. 21.🌈 In the resistor colour code, which number does grey stand for?
  22. 22.🌈 In the resistor colour code, which number does white stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6100 Ω resistor? (a) blue-brown-red (b) blue-brown-brown (c) blue-brown-orange (d) brown-blue-red
  24. 24.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  25. 25.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands grey, grey, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, orange, orange. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58000 Ω resistor? (a) green-grey-red (b) green-grey-yellow (c) grey-green-orange (d) green-grey-orange
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) yellow-brown-brown (b) brown-yellow-red (c) brown-yellow-black (d) brown-yellow-brown
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 780 Ω resistor? (a) grey-violet-brown (b) violet-grey-black (c) violet-grey-red (d) violet-grey-brown
  31. 31.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65000 Ω resistor? (a) blue-green-orange (b) blue-green-yellow (c) green-blue-orange (d) blue-green-red
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71000 Ω resistor? (a) brown-violet-orange (b) violet-brown-red (c) violet-brown-orange (d) violet-brown-yellow
  34. 34.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands grey, violet, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74000 Ω resistor? (a) violet-yellow-red (b) violet-yellow-yellow (c) violet-yellow-orange (d) yellow-violet-orange
  37. 37.🌈 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
  38. 38.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) brown-white-brown (b) red-white-black (c) brown-white-black (d) white-brown-black
  40. 40.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 360
  2. 2
  3. 920
  4. 820
  5. 6
  6. 5
  7. 920
  8. 1
  9. 66
  10. 7
  11. red-green-brown
  12. 780
  13. 5 %
  14. 18000
  15. 77
  16. 4
  17. 3
  18. yellow-red-orange
  19. 0
  20. violet-violet-orange
  21. 8
  22. 9
  23. blue-brown-red
  24. the one nearest an end
  25. 3.9
  26. 88
  27. 13000
  28. green-grey-orange
  29. brown-yellow-brown
  30. violet-grey-brown
  31. 27
  32. blue-green-orange
  33. violet-brown-orange
  34. 18
  35. 87
  36. violet-yellow-orange
  37. orange-black-black
  38. 690
  39. brown-white-black
  40. 3.5

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