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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 874 · 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 yellow stand for?
  2. 2.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) white-green-black (b) grey-green-brown (c) grey-green-black (d) green-grey-black
  4. 4.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does black stand for?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-orange (c) red-orange-yellow (d) red-orange-red
  7. 7.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
  10. 10.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  11. 11.🌈 A resistor has the colour bands red, black, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64 Ω resistor? (a) yellow-blue-black (b) blue-yellow-brown (c) violet-yellow-black (d) blue-yellow-black
  13. 13.🌈 In the resistor colour code, which number does grey stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98000 Ω resistor? (a) white-grey-yellow (b) white-grey-red (c) white-grey-orange (d) grey-white-orange
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) blue-red-red (b) red-blue-red (c) blue-red-brown (d) blue-red-orange
  16. 16.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 In the resistor colour code, which number does blue stand for?
  20. 20.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does orange stand for?
  23. 23.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9300 Ω resistor? (a) white-orange-brown (b) white-orange-orange (c) orange-white-red (d) white-orange-red
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6800 Ω resistor? (a) blue-grey-orange (b) grey-blue-red (c) blue-grey-brown (d) blue-grey-red
  26. 26.🌈 In the resistor colour code, which number does white stand for?
  27. 27.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2700 Ω resistor? (a) violet-red-red (b) red-violet-red (c) red-violet-orange (d) red-violet-brown
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1500 Ω resistor? (a) brown-green-orange (b) brown-green-red (c) green-brown-red (d) brown-green-brown
  30. 30.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands yellow, orange, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands grey, brown, brown. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4500 Ω resistor? (a) yellow-green-orange (b) yellow-green-red (c) green-yellow-red (d) yellow-green-brown
  36. 36.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, white, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 4
  2. 22
  3. grey-green-black
  4. 72
  5. 0
  6. red-orange-orange
  7. 6.1
  8. 20
  9. 16000
  10. the one nearest an end
  11. 200
  12. blue-yellow-black
  13. 8
  14. white-grey-orange
  15. blue-red-red
  16. 8400
  17. 7800
  18. 63
  19. 6
  20. 86
  21. 150
  22. 3
  23. 5
  24. white-orange-red
  25. blue-grey-red
  26. 9
  27. 5 %
  28. red-violet-red
  29. brown-green-red
  30. 5000
  31. 4300
  32. 710
  33. 810
  34. 50
  35. yellow-green-red
  36. 980
  37. 2100
  38. 4.9
  39. 130
  40. 1.6

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