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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 969 · 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 brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  3. 3.🌈 A resistor has the colour bands violet, blue, brown. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands blue, blue, red. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 In the resistor colour code, which number does red stand for?
  7. 7.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 570 Ω resistor? (a) green-violet-brown (b) green-violet-black (c) green-violet-red (d) violet-green-brown
  11. 11.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands green, yellow, brown. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does black stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-black (b) orange-red-brown (c) red-orange-red (d) red-orange-brown
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 880 Ω resistor? (a) grey-grey-red (b) grey-grey-black (c) grey-white-brown (d) grey-grey-brown
  16. 16.🌈 In the resistor colour code, which number does brown stand for?
  17. 17.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59000 Ω resistor? (a) green-white-red (b) green-white-yellow (c) green-white-orange (d) white-green-orange
  21. 21.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) red-brown-orange (b) red-brown-yellow (c) brown-red-orange (d) red-brown-red
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) yellow-orange-black (b) orange-yellow-black (c) green-orange-black (d) yellow-orange-brown
  25. 25.🌈 A resistor has the colour bands grey, orange, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does green stand for?
  28. 28.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does violet stand for?
  31. 31.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands white, blue, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26000 Ω resistor? (a) red-blue-yellow (b) red-blue-orange (c) red-blue-red (d) blue-red-orange
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7500 Ω resistor? (a) violet-green-brown (b) violet-green-orange (c) violet-green-red (d) green-violet-red
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11 Ω resistor? (a) red-brown-black (b) brown-brown-brown (c) brown-red-black (d) brown-brown-black
  37. 37.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands green, green, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands violet, black, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 18
  2. 5 %
  3. 760
  4. 6600
  5. 390
  6. 2
  7. 150
  8. 9.5
  9. the one nearest an end
  10. green-violet-brown
  11. 20
  12. 540
  13. 0
  14. red-orange-brown
  15. grey-grey-brown
  16. 1
  17. 1
  18. 4.2
  19. 87000
  20. green-white-orange
  21. 71000
  22. 6.3
  23. red-brown-orange
  24. yellow-orange-black
  25. 830
  26. 97
  27. 5
  28. 25
  29. 9.9
  30. 7
  31. 470
  32. 96000
  33. 7.2
  34. red-blue-orange
  35. violet-green-red
  36. brown-brown-black
  37. 870
  38. 55
  39. 2.6
  40. 700

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