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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 202 · 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 75 Ω resistor? (a) grey-green-black (b) green-violet-black (c) violet-green-black (d) violet-green-brown
  2. 2.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86 Ω resistor? (a) grey-blue-brown (b) white-blue-black (c) blue-grey-black (d) grey-blue-black
  4. 4.🌈 In the resistor colour code, which number does brown stand for?
  5. 5.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) yellow-orange-black (b) yellow-orange-red (c) yellow-orange-brown (d) orange-yellow-brown
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49 Ω resistor? (a) green-white-black (b) yellow-white-black (c) white-yellow-black (d) yellow-white-brown
  9. 9.🌈 In the resistor colour code, which number does black stand for?
  10. 10.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53 Ω resistor? (a) green-orange-black (b) blue-orange-black (c) green-orange-brown (d) orange-green-black
  12. 12.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 390 Ω resistor? (a) white-orange-brown (b) orange-white-red (c) orange-white-black (d) orange-white-brown
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  15. 15.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  16. 16.🌈 In the resistor colour code, which number does red stand for?
  17. 17.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 310 Ω resistor? (a) orange-brown-black (b) brown-orange-brown (c) orange-brown-brown (d) orange-brown-red
  19. 19.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8700 Ω resistor? (a) violet-grey-red (b) grey-violet-orange (c) grey-violet-brown (d) grey-violet-red
  21. 21.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34000 Ω resistor? (a) orange-yellow-yellow (b) yellow-orange-orange (c) orange-yellow-red (d) orange-yellow-orange
  23. 23.🌈 In the resistor colour code, which number does orange stand for?
  24. 24.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) green-black-orange (b) blue-green-orange (c) green-black-yellow (d) green-black-red
  31. 31.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) brown-yellow-brown (b) brown-yellow-black (c) brown-yellow-red (d) yellow-brown-brown
  33. 33.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32000 Ω resistor? (a) orange-red-red (b) red-orange-orange (c) orange-red-yellow (d) orange-red-orange
  35. 35.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 In the resistor colour code, which number does yellow stand for?
  37. 37.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 In the resistor colour code, which number does green stand for?
  39. 39.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. violet-green-black
  2. 27
  3. grey-blue-black
  4. 1
  5. 820
  6. 50
  7. yellow-orange-brown
  8. yellow-white-black
  9. 0
  10. 2.1
  11. green-orange-black
  12. 24
  13. orange-white-brown
  14. 5 %
  15. the one nearest an end
  16. 2
  17. 10000
  18. orange-brown-brown
  19. 8.9
  20. grey-violet-red
  21. 81000
  22. orange-yellow-orange
  23. 3
  24. 1.3
  25. 20000
  26. 11
  27. 80
  28. 3.3
  29. 2.3
  30. green-black-orange
  31. 990
  32. brown-yellow-brown
  33. 70000
  34. orange-red-orange
  35. 3.7
  36. 4
  37. 2.5
  38. 5
  39. 380
  40. 410

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