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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 127 · 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 green stand for?
  2. 2.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) the one nearest an end (d) any band
  3. 3.🌈 In the resistor colour code, which number does black stand for?
  4. 4.🌈 A resistor has the colour bands green, violet, orange. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 560 Ω resistor? (a) green-blue-black (b) blue-green-brown (c) green-blue-red (d) green-blue-brown
  7. 7.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9800 Ω resistor? (a) white-grey-red (b) grey-white-red (c) white-grey-orange (d) white-grey-brown
  9. 9.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35000 Ω resistor? (a) orange-green-orange (b) orange-green-red (c) green-orange-orange (d) orange-green-yellow
  11. 11.🌈 A resistor has the colour bands violet, blue, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 810 Ω resistor? (a) grey-brown-red (b) grey-brown-black (c) brown-grey-brown (d) grey-brown-brown
  13. 13.🌈 In the resistor colour code, which number does grey stand for?
  14. 14.🌈 In the resistor colour code, which number does red stand for?
  15. 15.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  17. 17.🌈 In the resistor colour code, which number does blue stand for?
  18. 18.🌈 In the resistor colour code, which number does white stand for?
  19. 19.🌈 A resistor has the colour bands blue, green, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52000 Ω resistor? (a) green-red-red (b) red-green-orange (c) green-red-orange (d) green-red-yellow
  23. 23.🌈 In the resistor colour code, which number does orange stand for?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 480 Ω resistor? (a) yellow-grey-black (b) yellow-grey-brown (c) yellow-grey-red (d) grey-yellow-brown
  25. 25.🌈 A resistor has the colour bands yellow, orange, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands green, violet, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 In the resistor colour code, which number does brown stand for?
  30. 30.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 940 Ω resistor? (a) white-yellow-brown (b) white-yellow-black (c) white-yellow-red (d) yellow-white-brown
  33. 33.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands green, white, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands yellow, red, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 160 Ω resistor? (a) brown-blue-black (b) brown-blue-red (c) blue-brown-brown (d) brown-blue-brown
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) red-violet-red (b) violet-red-orange (c) violet-red-red (d) violet-red-brown
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) brown-grey-black (b) grey-brown-brown (c) grey-brown-black (d) white-brown-black

Answer key

  1. 5
  2. the one nearest an end
  3. 0
  4. 57000
  5. 3.1
  6. green-blue-brown
  7. 640
  8. white-grey-red
  9. 2.8
  10. orange-green-orange
  11. 76
  12. grey-brown-brown
  13. 8
  14. 2
  15. 2.4
  16. 5 %
  17. 6
  18. 9
  19. 650
  20. 3900
  21. 520
  22. green-red-orange
  23. 3
  24. yellow-grey-brown
  25. 4300
  26. 35000
  27. 57
  28. 1.5
  29. 1
  30. 3.5
  31. 60
  32. white-yellow-brown
  33. 51
  34. 290
  35. 53
  36. 5900
  37. 42000
  38. brown-blue-brown
  39. violet-red-red
  40. grey-brown-black

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