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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 7 · 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 gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  2. 2.🌈 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
  3. 3.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4900 Ω resistor? (a) yellow-white-orange (b) yellow-white-red (c) white-yellow-red (d) yellow-white-brown
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) brown-yellow-black (b) yellow-white-black (c) white-yellow-black (d) white-yellow-brown
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-black (b) brown-white-brown (c) white-black-brown (d) white-black-red
  7. 7.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands brown, white, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does violet stand for?
  12. 12.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands violet, orange, black. 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 brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does blue stand for?
  18. 18.🌈 A resistor has the colour bands green, blue, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) grey-green-brown (b) green-grey-red (c) green-grey-black (d) green-grey-brown
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24 Ω resistor? (a) yellow-red-black (b) red-yellow-brown (c) red-yellow-black (d) orange-yellow-black
  21. 21.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does green stand for?
  24. 24.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands orange, yellow, brown. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15 Ω resistor? (a) green-brown-black (b) brown-green-black (c) brown-green-brown (d) red-green-black
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-red (b) red-violet-brown (c) violet-red-brown (d) red-violet-black
  28. 28.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) yellow-orange-black (b) orange-black-black (c) yellow-black-black (d) orange-black-brown
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) red-black-orange (b) orange-red-red (c) red-black-brown (d) red-black-red
  31. 31.🌈 In the resistor colour code, which number does orange stand for?
  32. 32.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands white, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands violet, black, black. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does brown stand for?
  39. 39.🌈 A resistor has the colour bands green, orange, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands grey, violet, red. What is its value (in ohms)?

Answer key

  1. 5 %
  2. the one nearest an end
  3. 970
  4. yellow-white-red
  5. white-yellow-black
  6. white-black-brown
  7. 12000
  8. 2100
  9. 38
  10. 1.9
  11. 7
  12. 430
  13. 73
  14. 4
  15. 1.8
  16. 21
  17. 6
  18. 5.6
  19. green-grey-brown
  20. red-yellow-black
  21. 4.8
  22. 81
  23. 5
  24. 110
  25. 340
  26. brown-green-black
  27. red-violet-brown
  28. 88
  29. orange-black-black
  30. red-black-red
  31. 3
  32. 810
  33. 740
  34. 29
  35. 85000
  36. 94
  37. 70
  38. 1
  39. 530
  40. 8700

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