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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 212 · 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.

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  1. 1.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) green-red-black (b) red-yellow-black (c) yellow-red-black (d) yellow-red-brown
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27 Ω resistor? (a) red-violet-brown (b) violet-red-black (c) orange-violet-black (d) red-violet-black
  4. 4.🌈 In the resistor colour code, which number does orange stand for?
  5. 5.🌈 In the resistor colour code, which number does red stand for?
  6. 6.🌈 In the resistor colour code, which number does white stand for?
  7. 7.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22000 Ω resistor? (a) red-red-red (b) red-red-yellow (c) red-orange-orange (d) red-red-orange
  10. 10.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  12. 12.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) yellow-white-black (b) white-yellow-brown (c) white-yellow-black (d) brown-yellow-black
  17. 17.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands yellow, grey, black. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) yellow-orange-black (b) yellow-orange-brown (c) orange-yellow-black (d) green-orange-black
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-red-black (b) red-black-brown (c) red-black-black (d) orange-black-black
  23. 23.🌈 In the resistor colour code, which number does black stand for?
  24. 24.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does grey stand for?
  26. 26.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does yellow stand for?
  28. 28.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands orange, black, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands green, green, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands violet, green, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands white, green, brown. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18000 Ω resistor? (a) brown-grey-red (b) brown-grey-yellow (c) brown-grey-orange (d) grey-brown-orange
  34. 34.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95 Ω resistor? (a) white-green-black (b) green-white-black (c) white-green-brown (d) brown-green-black
  37. 37.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands orange, blue, black. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4400 Ω resistor? (a) yellow-yellow-brown (b) yellow-yellow-orange (c) yellow-green-red (d) yellow-yellow-red
  40. 40.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 690
  2. yellow-red-black
  3. red-violet-black
  4. 3
  5. 2
  6. 9
  7. 8.3
  8. 290
  9. red-red-orange
  10. the one nearest an end
  11. 5 %
  12. 54000
  13. 76
  14. 760
  15. 38
  16. white-yellow-black
  17. 590
  18. 57
  19. 190
  20. 48
  21. yellow-orange-black
  22. red-black-black
  23. 0
  24. 4.2
  25. 8
  26. 7.7
  27. 4
  28. 42
  29. 30
  30. 550
  31. 75000
  32. 950
  33. brown-grey-orange
  34. 68
  35. 31000
  36. white-green-black
  37. 230
  38. 36
  39. yellow-yellow-red
  40. 7.6

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