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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 251 · 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 red stand for?
  2. 2.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  5. 5.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
  7. 7.🌈 A resistor has the colour bands white, blue, orange. 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 white, grey, red. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) red-orange-yellow (b) red-orange-orange (c) red-orange-red (d) orange-red-orange
  13. 13.🌈 In the resistor colour code, which number does yellow stand for?
  14. 14.🌈 In the resistor colour code, which number does grey stand for?
  15. 15.🌈 A resistor has the colour bands green, grey, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-orange-black (b) orange-red-black (c) red-red-black (d) red-red-brown
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6500 Ω resistor? (a) blue-green-brown (b) green-blue-red (c) blue-green-red (d) blue-green-orange
  19. 19.🌈 In the resistor colour code, which number does blue stand for?
  20. 20.🌈 In the resistor colour code, which number does white stand for?
  21. 21.🌈 In the resistor colour code, which number does violet stand for?
  22. 22.🌈 In the resistor colour code, which number does black stand for?
  23. 23.🌈 In the resistor colour code, which number does orange stand for?
  24. 24.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 260 Ω resistor? (a) red-blue-black (b) red-blue-red (c) red-blue-brown (d) blue-red-brown
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77 Ω resistor? (a) violet-violet-brown (b) violet-grey-black (c) grey-violet-black (d) violet-violet-black
  28. 28.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands blue, yellow, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands yellow, grey, orange. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1400 Ω resistor? (a) brown-yellow-red (b) yellow-brown-red (c) brown-yellow-brown (d) brown-yellow-orange
  33. 33.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8500 Ω resistor? (a) grey-green-brown (b) green-grey-red (c) grey-green-red (d) grey-green-orange
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96000 Ω resistor? (a) white-blue-red (b) white-blue-yellow (c) blue-white-orange (d) white-blue-orange
  38. 38.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 2
  2. 54
  3. 47
  4. 5 %
  5. 29
  6. the one nearest an end
  7. 96
  8. 1
  9. 9800
  10. 14000
  11. 50
  12. red-orange-orange
  13. 4
  14. 8
  15. 58000
  16. 54000
  17. red-red-black
  18. blue-green-red
  19. 6
  20. 9
  21. 7
  22. 0
  23. 3
  24. 8.7
  25. 23000
  26. red-blue-brown
  27. violet-violet-black
  28. 30000
  29. 6.4
  30. 3.9
  31. 48000
  32. brown-yellow-red
  33. 5.2
  34. 690
  35. 32
  36. grey-green-red
  37. white-blue-orange
  38. 50000
  39. 15
  40. 2.5

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