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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 281 · 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 red, green, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands white, orange, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-red (b) brown-red-black (c) red-brown-brown (d) brown-red-brown
  5. 5.🌈 A resistor has the colour bands white, blue, red. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does brown stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) white-brown-black (b) grey-brown-black (c) brown-grey-black (d) grey-brown-brown
  8. 8.🌈 A resistor has the colour bands red, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  13. 13.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  14. 14.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) the widest gap (d) any band
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3200 Ω resistor? (a) orange-red-brown (b) orange-red-orange (c) red-orange-red (d) orange-red-red
  17. 17.🌈 A resistor has the colour bands orange, yellow, brown. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, red, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) white-orange-red (b) white-orange-black (c) orange-white-brown (d) white-orange-brown
  20. 20.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands grey, blue, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands orange, orange, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does white stand for?
  26. 26.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands yellow, violet, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8800 Ω resistor? (a) grey-grey-orange (b) grey-grey-brown (c) grey-grey-red (d) grey-white-red
  31. 31.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29 Ω resistor? (a) white-red-black (b) red-white-brown (c) red-white-black (d) orange-white-black
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26 Ω resistor? (a) orange-blue-black (b) red-blue-brown (c) blue-red-black (d) red-blue-black
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9400 Ω resistor? (a) yellow-white-red (b) white-yellow-orange (c) white-yellow-red (d) white-yellow-brown
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) blue-green-brown (b) green-blue-black (c) violet-green-black (d) blue-green-black
  36. 36.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 In the resistor colour code, which number does red stand for?
  38. 38.🌈 A resistor has the colour bands green, violet, black. What is its value (in ohms)?
  39. 39.🌈 In the resistor colour code, which number does green stand for?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13000 Ω resistor? (a) brown-orange-orange (b) brown-orange-yellow (c) orange-brown-orange (d) brown-orange-red

Answer key

  1. 25
  2. 200
  3. 9.3
  4. brown-red-brown
  5. 9600
  6. 1
  7. grey-brown-black
  8. 260
  9. 110
  10. 570
  11. 43
  12. 91
  13. 5 %
  14. 1.2
  15. the one nearest an end
  16. orange-red-red
  17. 340
  18. 62
  19. white-orange-brown
  20. 7.2
  21. 86000
  22. 190
  23. 330
  24. 1
  25. 9
  26. 1.4
  27. 9.2
  28. 820
  29. 47
  30. grey-grey-red
  31. 1100
  32. red-white-black
  33. red-blue-black
  34. white-yellow-red
  35. blue-green-black
  36. 710
  37. 2
  38. 57
  39. 5
  40. brown-orange-orange

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