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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 630 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-green-black (b) green-yellow-black (c) yellow-yellow-black (d) yellow-yellow-brown
  2. 2.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95 Ω resistor? (a) white-green-brown (b) white-green-black (c) brown-green-black (d) green-white-black
  4. 4.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  6. 6.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  8. 8.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands green, white, red. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) yellow-brown-black (b) orange-brown-brown (c) orange-brown-black (d) brown-orange-black
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 97000 Ω resistor? (a) white-violet-orange (b) violet-white-orange (c) white-violet-yellow (d) white-violet-red
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) green-brown-red (b) green-brown-black (c) brown-green-brown (d) green-brown-brown
  13. 13.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does red stand for?
  15. 15.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) yellow-orange-brown (b) yellow-orange-black (c) yellow-orange-red (d) orange-yellow-brown
  17. 17.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 In the resistor colour code, which number does orange stand for?
  21. 21.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 In the resistor colour code, which number does grey stand for?
  24. 24.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does yellow stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56 Ω resistor? (a) green-blue-black (b) blue-blue-black (c) green-blue-brown (d) blue-green-black
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) white-grey-black (b) brown-grey-black (c) grey-white-black (d) white-grey-brown
  28. 28.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 150 Ω resistor? (a) green-brown-brown (b) brown-green-red (c) brown-green-brown (d) brown-green-black
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) red-brown-brown (b) red-brown-orange (c) brown-red-red (d) red-brown-red
  32. 32.🌈 In the resistor colour code, which number does black stand for?
  33. 33.🌈 A resistor has the colour bands red, blue, orange. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does blue stand for?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) white-white-black (b) white-white-brown (c) brown-white-black (d) white-black-black
  36. 36.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands orange, blue, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands orange, grey, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does green stand for?

Answer key

  1. yellow-yellow-black
  2. 88
  3. white-green-black
  4. 750
  5. 2900
  6. the one nearest an end
  7. 5 %
  8. 380
  9. 5900
  10. orange-brown-black
  11. white-violet-orange
  12. green-brown-brown
  13. 780
  14. 2
  15. 7.1
  16. yellow-orange-brown
  17. 2.3
  18. 81000
  19. 210
  20. 3
  21. 56000
  22. 160
  23. 8
  24. 2.7
  25. 4
  26. green-blue-black
  27. white-grey-black
  28. 650
  29. 22
  30. brown-green-brown
  31. red-brown-red
  32. 0
  33. 26000
  34. 6
  35. white-white-black
  36. 250
  37. 36
  38. 3800
  39. 410
  40. 5

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