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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 719 · 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 white, violet, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands violet, green, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 In the resistor colour code, which number does violet stand for?
  4. 4.🌈 In the resistor colour code, which number does black stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4600 Ω resistor? (a) yellow-blue-red (b) yellow-blue-brown (c) yellow-blue-orange (d) blue-yellow-red
  6. 6.🌈 In the resistor colour code, which number does red stand for?
  7. 7.🌈 In the resistor colour code, which number does brown stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 820 Ω resistor? (a) grey-red-red (b) red-grey-brown (c) grey-red-black (d) grey-red-brown
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53000 Ω resistor? (a) green-orange-red (b) green-orange-orange (c) orange-green-orange (d) green-orange-yellow
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  11. 11.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) any band (d) the widest gap
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33000 Ω resistor? (a) orange-orange-red (b) orange-orange-orange (c) orange-orange-yellow (d) orange-yellow-orange
  13. 13.🌈 A resistor has the colour bands grey, violet, brown. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does yellow stand for?
  15. 15.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) orange-brown-orange (b) orange-brown-red (c) brown-orange-red (d) orange-brown-brown
  19. 19.🌈 A resistor has the colour bands yellow, orange, red. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does blue stand for?
  21. 21.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does green stand for?
  23. 23.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
  29. 29.🌈 In the resistor colour code, which number does orange stand for?
  30. 30.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-red (b) red-green-brown (c) green-red-red (d) red-green-orange
  32. 32.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) grey-green-brown (b) green-grey-brown (c) green-grey-black (d) green-grey-red
  39. 39.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?

Answer key

  1. 97
  2. 75
  3. 7
  4. 0
  5. yellow-blue-red
  6. 2
  7. 1
  8. grey-red-brown
  9. green-orange-orange
  10. 5 %
  11. the one nearest an end
  12. orange-orange-orange
  13. 870
  14. 4
  15. 360
  16. 640
  17. 450
  18. orange-brown-red
  19. 4300
  20. 6
  21. 2500
  22. 5
  23. 6
  24. 680
  25. 45000
  26. 7800
  27. 28
  28. 750
  29. 3
  30. 59
  31. red-green-red
  32. 780
  33. 250
  34. 9.1
  35. 20
  36. 55
  37. 140
  38. green-grey-brown
  39. 110
  40. 70000

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