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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 188 · 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 grey stand for?
  2. 2.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands orange, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does orange stand for?
  5. 5.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  6. 6.🌈 A resistor has the colour bands white, orange, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands yellow, black, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does brown stand for?
  10. 10.🌈 A resistor has the colour bands blue, blue, brown. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands white, green, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 63 Ω resistor? (a) blue-orange-black (b) orange-blue-black (c) blue-orange-brown (d) violet-orange-black
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-black (b) white-black-red (c) white-black-brown (d) brown-white-brown
  15. 15.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-black (b) brown-red-red (c) brown-red-brown (d) red-brown-brown
  17. 17.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 660 Ω resistor? (a) blue-blue-red (b) blue-blue-black (c) blue-violet-brown (d) blue-blue-brown
  19. 19.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 In the resistor colour code, which number does red stand for?
  21. 21.🌈 A resistor has the colour bands yellow, white, red. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 880 Ω resistor? (a) grey-white-brown (b) grey-grey-brown (c) grey-grey-black (d) grey-grey-red
  23. 23.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-brown (b) red-grey-red (c) red-grey-black (d) grey-red-brown
  27. 27.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1500 Ω resistor? (a) brown-green-orange (b) green-brown-red (c) brown-green-brown (d) brown-green-red
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77000 Ω resistor? (a) violet-violet-red (b) violet-violet-orange (c) violet-grey-orange (d) violet-violet-yellow
  31. 31.🌈 In the resistor colour code, which number does yellow stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) grey-green-yellow (b) green-grey-orange (c) grey-green-red (d) grey-green-orange
  33. 33.🌈 A resistor has the colour bands white, red, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 In the resistor colour code, which number does blue stand for?
  35. 35.🌈 A resistor has the colour bands green, black, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands orange, blue, orange. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) green-blue-black (b) blue-green-brown (c) violet-green-black (d) blue-green-black
  40. 40.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 8
  2. 98000
  3. 310
  4. 3
  5. the one nearest an end
  6. 930
  7. 2.4
  8. 40
  9. 1
  10. 660
  11. 95
  12. 51
  13. blue-orange-black
  14. white-black-brown
  15. 1
  16. brown-red-brown
  17. 5 %
  18. blue-blue-brown
  19. 53
  20. 2
  21. 4900
  22. grey-grey-brown
  23. 410
  24. 500
  25. 35000
  26. red-grey-brown
  27. 450
  28. 490
  29. brown-green-red
  30. violet-violet-orange
  31. 4
  32. grey-green-orange
  33. 92
  34. 6
  35. 5000
  36. 97
  37. 90
  38. 36000
  39. blue-green-black
  40. 8.9

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