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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 685 · 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.🌈 A resistor has the colour bands yellow, green, black. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does blue stand for?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  4. 4.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5400 Ω resistor? (a) green-yellow-red (b) green-yellow-orange (c) yellow-green-red (d) green-yellow-brown
  6. 6.🌈 A resistor has the colour bands blue, blue, orange. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands yellow, brown, brown. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40000 Ω resistor? (a) yellow-black-orange (b) green-yellow-orange (c) yellow-black-yellow (d) yellow-black-red
  10. 10.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  11. 11.🌈 A resistor has the colour bands violet, yellow, orange. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) violet-brown-red (b) brown-violet-red (c) violet-brown-brown (d) violet-brown-orange
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62 Ω resistor? (a) violet-red-black (b) blue-red-brown (c) blue-red-black (d) red-blue-black
  14. 14.🌈 In the resistor colour code, which number does brown stand for?
  15. 15.🌈 In the resistor colour code, which number does yellow stand for?
  16. 16.🌈 A resistor has the colour bands white, grey, black. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does green stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4300 Ω resistor? (a) orange-yellow-red (b) yellow-orange-orange (c) yellow-orange-brown (d) yellow-orange-red
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39000 Ω resistor? (a) orange-white-yellow (b) orange-white-orange (c) orange-white-red (d) white-orange-orange
  20. 20.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) blue-black-orange (b) blue-black-red (c) violet-blue-red (d) blue-black-brown
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) violet-white-brown (b) violet-white-black (c) white-violet-black (d) grey-white-black
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9300 Ω resistor? (a) orange-white-red (b) white-orange-red (c) white-orange-brown (d) white-orange-orange
  25. 25.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 In the resistor colour code, which number does black stand for?
  30. 30.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does grey stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 300 Ω resistor? (a) orange-black-black (b) orange-black-red (c) orange-black-brown (d) yellow-orange-brown
  33. 33.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 160 Ω resistor? (a) blue-brown-brown (b) brown-blue-red (c) brown-blue-black (d) brown-blue-brown
  35. 35.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands yellow, black, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 130 Ω resistor? (a) brown-orange-black (b) brown-orange-brown (c) brown-orange-red (d) orange-brown-brown
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) grey-red-black (b) red-violet-black (c) violet-red-brown (d) violet-red-black

Answer key

  1. 45
  2. 6
  3. 5 %
  4. 90
  5. green-yellow-red
  6. 66000
  7. 33
  8. 410
  9. yellow-black-orange
  10. the one nearest an end
  11. 74000
  12. violet-brown-red
  13. blue-red-black
  14. 1
  15. 4
  16. 98
  17. 5
  18. yellow-orange-red
  19. orange-white-orange
  20. 8800
  21. 920
  22. blue-black-red
  23. violet-white-black
  24. white-orange-red
  25. 4700
  26. 53000
  27. 690
  28. 3.5
  29. 0
  30. 74
  31. 8
  32. orange-black-brown
  33. 22
  34. brown-blue-brown
  35. 23
  36. 40
  37. 20000
  38. 8.3
  39. brown-orange-brown
  40. violet-red-black

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