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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 76 · 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.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  2. 2.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does violet stand for?
  4. 4.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  6. 6.🌈 A resistor has the colour bands blue, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) orange-red-brown (b) red-black-black (c) red-black-red (d) red-black-brown
  9. 9.🌈 A resistor has the colour bands yellow, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) grey-red-orange (b) red-grey-orange (c) red-grey-yellow (d) red-grey-red
  11. 11.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does orange stand for?
  14. 14.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39 Ω resistor? (a) white-orange-black (b) orange-white-black (c) orange-white-brown (d) yellow-white-black
  17. 17.🌈 A resistor has the colour bands grey, blue, red. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86 Ω resistor? (a) grey-blue-black (b) white-blue-black (c) blue-grey-black (d) grey-blue-brown
  19. 19.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does grey stand for?
  21. 21.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71000 Ω resistor? (a) violet-brown-yellow (b) brown-violet-orange (c) violet-brown-red (d) violet-brown-orange
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61 Ω resistor? (a) violet-brown-black (b) brown-blue-black (c) blue-brown-brown (d) blue-brown-black
  24. 24.🌈 A resistor has the colour bands yellow, violet, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands green, white, red. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) yellow-black-brown (b) green-black-black (c) green-yellow-black (d) yellow-black-black
  29. 29.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does yellow stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) red-green-red (b) red-green-orange (c) green-red-orange (d) red-green-yellow
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 950 Ω resistor? (a) green-white-brown (b) white-green-black (c) white-green-red (d) white-green-brown
  34. 34.🌈 A resistor has the colour bands white, yellow, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6100 Ω resistor? (a) blue-brown-red (b) blue-brown-brown (c) brown-blue-red (d) blue-brown-orange
  37. 37.🌈 A resistor has the colour bands green, green, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
  39. 39.🌈 In the resistor colour code, which number does blue stand for?
  40. 40.🌈 A resistor has the colour bands yellow, black, red. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. 420
  3. 7
  4. 71000
  5. 5 %
  6. 610
  7. 2.6
  8. red-black-brown
  9. 470
  10. red-grey-orange
  11. 56
  12. 34
  13. 3
  14. 4700
  15. 600
  16. orange-white-black
  17. 8600
  18. grey-blue-black
  19. 310
  20. 8
  21. 13
  22. violet-brown-orange
  23. blue-brown-black
  24. 4.7
  25. 170
  26. 410
  27. 5900
  28. yellow-black-black
  29. 44
  30. 9.8
  31. 4
  32. red-green-orange
  33. white-green-brown
  34. 9.4
  35. 910
  36. blue-brown-red
  37. 5500
  38. 64000
  39. 6
  40. 4000

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