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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 440 · 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 green, red, red. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does orange stand for?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 560 Ω resistor? (a) green-blue-brown (b) green-blue-black (c) green-blue-red (d) blue-green-brown
  4. 4.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands grey, brown, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) white-violet-black (b) grey-violet-brown (c) grey-violet-black (d) violet-grey-black
  8. 8.🌈 A resistor has the colour bands yellow, violet, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does red stand for?
  10. 10.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  11. 11.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) the gold band (d) any band
  12. 12.🌈 In the resistor colour code, which number does green stand for?
  13. 13.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does brown stand for?
  15. 15.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands orange, yellow, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does yellow stand for?
  22. 22.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands blue, yellow, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) white-grey-red (b) grey-white-brown (c) white-grey-brown (d) white-grey-black
  26. 26.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6700 Ω resistor? (a) violet-blue-red (b) blue-violet-orange (c) blue-violet-red (d) blue-violet-brown
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35000 Ω resistor? (a) orange-green-yellow (b) orange-green-orange (c) green-orange-orange (d) orange-green-red
  29. 29.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) yellow-grey-brown (b) grey-yellow-black (c) green-grey-black (d) yellow-grey-black
  31. 31.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 In the resistor colour code, which number does black stand for?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95000 Ω resistor? (a) white-green-yellow (b) white-green-orange (c) green-white-orange (d) white-green-red
  36. 36.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 In the resistor colour code, which number does violet stand for?
  39. 39.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does white stand for?

Answer key

  1. 5200
  2. 3
  3. green-blue-brown
  4. 790
  5. 810
  6. 860
  7. grey-violet-black
  8. 4.7
  9. 2
  10. 4700
  11. the one nearest an end
  12. 5
  13. 1.1
  14. 1
  15. 30
  16. 7.2
  17. 99
  18. 6200
  19. 34
  20. 50000
  21. 4
  22. 2500
  23. 6.4
  24. 8.5
  25. white-grey-brown
  26. 130
  27. blue-violet-red
  28. orange-green-orange
  29. 5 %
  30. yellow-grey-black
  31. 3
  32. 9.7
  33. 53
  34. 0
  35. white-green-orange
  36. 26
  37. 170
  38. 7
  39. 22
  40. 9

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