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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 22 · 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, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  4. 4.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
  5. 5.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does green stand for?
  7. 7.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands violet, violet, brown. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does black stand for?
  12. 12.🌈 A resistor has the colour bands violet, blue, red. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does orange stand for?
  16. 16.🌈 A resistor has the colour bands yellow, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 440 Ω resistor? (a) yellow-yellow-red (b) yellow-green-brown (c) yellow-yellow-brown (d) yellow-yellow-black
  23. 23.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands violet, violet, orange. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does brown stand for?
  26. 26.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) brown-red-brown (b) red-brown-brown (c) red-brown-black (d) red-brown-red
  30. 30.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) yellow-grey-brown (b) yellow-grey-black (c) green-grey-black (d) grey-yellow-black
  32. 32.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does red stand for?
  34. 34.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34000 Ω resistor? (a) yellow-orange-orange (b) orange-yellow-orange (c) orange-yellow-yellow (d) orange-yellow-red
  38. 38.🌈 In the resistor colour code, which number does white stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) grey-brown-black (b) red-grey-black (c) brown-grey-brown (d) brown-grey-black
  40. 40.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 520
  2. 280
  3. 5 %
  4. the one nearest an end
  5. 90000
  6. 5
  7. 7.7
  8. 770
  9. 430
  10. 69
  11. 0
  12. 7600
  13. 3.2
  14. 120
  15. 3
  16. 460
  17. 30
  18. 61000
  19. 580
  20. 240
  21. 41
  22. yellow-yellow-brown
  23. 50
  24. 77000
  25. 1
  26. 920
  27. 1.5
  28. 81
  29. red-brown-brown
  30. 100
  31. yellow-grey-black
  32. 31
  33. 2
  34. 300
  35. 9.6
  36. 9
  37. orange-yellow-orange
  38. 9
  39. brown-grey-black
  40. 220

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