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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 425 · 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 yellow stand for?
  2. 2.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  4. 4.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
  5. 5.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  11. 11.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) red-brown-black (b) brown-red-brown (c) red-brown-red (d) red-brown-brown
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 390 Ω resistor? (a) orange-white-black (b) orange-white-brown (c) white-orange-brown (d) orange-white-red
  16. 16.🌈 In the resistor colour code, which number does red stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3500 Ω resistor? (a) orange-green-brown (b) orange-green-red (c) orange-green-orange (d) green-orange-red
  18. 18.🌈 In the resistor colour code, which number does blue stand for?
  19. 19.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does orange stand for?
  21. 21.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) yellow-grey-brown (b) green-grey-black (c) yellow-grey-black (d) grey-yellow-black
  23. 23.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands green, blue, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 540 Ω resistor? (a) yellow-green-brown (b) green-yellow-black (c) green-yellow-brown (d) green-yellow-red
  28. 28.🌈 A resistor has the colour bands grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does green stand for?
  32. 32.🌈 A resistor has the colour bands yellow, white, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands blue, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29 Ω resistor? (a) white-red-black (b) orange-white-black (c) red-white-brown (d) red-white-black
  37. 37.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64000 Ω resistor? (a) blue-yellow-orange (b) yellow-blue-orange (c) blue-yellow-red (d) blue-yellow-yellow
  39. 39.🌈 A resistor has the colour bands yellow, black, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands green, green, orange. What is its value (in ohms)?

Answer key

  1. 4
  2. 70
  3. 22
  4. the one nearest an end
  5. 44
  6. 8
  7. 34
  8. 38000
  9. 80000
  10. 5 %
  11. 4.1
  12. 20
  13. 580
  14. red-brown-brown
  15. orange-white-brown
  16. 2
  17. orange-green-red
  18. 6
  19. 650
  20. 3
  21. 44000
  22. yellow-grey-black
  23. 15
  24. 810
  25. 660
  26. 5.6
  27. green-yellow-brown
  28. 860
  29. 620
  30. 2000
  31. 5
  32. 49
  33. 9.9
  34. 730
  35. 610
  36. red-white-black
  37. 15000
  38. blue-yellow-orange
  39. 400
  40. 55000

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