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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 385 · 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, white, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  4. 4.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8300 Ω resistor? (a) orange-grey-red (b) grey-orange-brown (c) grey-orange-orange (d) grey-orange-red
  6. 6.🌈 In the resistor colour code, which number does violet stand for?
  7. 7.🌈 A resistor has the colour bands yellow, orange, red. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands brown, white, red. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
  10. 10.🌈 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
  11. 11.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands green, violet, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does green stand for?
  14. 14.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) red-green-orange (b) red-green-red (c) red-green-yellow (d) green-red-orange
  16. 16.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53000 Ω resistor? (a) green-orange-yellow (b) green-orange-orange (c) orange-green-orange (d) green-orange-red
  18. 18.🌈 A resistor has the colour bands blue, yellow, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6900 Ω resistor? (a) blue-white-red (b) blue-white-orange (c) white-blue-red (d) blue-white-brown
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-orange (c) red-orange-yellow (d) red-orange-red
  22. 22.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does yellow stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) red-black-red (b) red-black-orange (c) red-black-brown (d) orange-red-red
  26. 26.🌈 In the resistor colour code, which number does red stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8200 Ω resistor? (a) grey-red-red (b) grey-red-orange (c) red-grey-red (d) grey-red-brown
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 750 Ω resistor? (a) violet-green-black (b) green-violet-brown (c) violet-green-red (d) violet-green-brown
  29. 29.🌈 In the resistor colour code, which number does brown stand for?
  30. 30.🌈 In the resistor colour code, which number does black stand for?
  31. 31.🌈 In the resistor colour code, which number does white stand for?
  32. 32.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 520 Ω resistor? (a) red-green-brown (b) green-red-brown (c) green-red-black (d) green-red-red
  35. 35.🌈 A resistor has the colour bands violet, violet, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 950 Ω resistor? (a) green-white-brown (b) white-green-black (c) white-green-red (d) white-green-brown
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11000 Ω resistor? (a) brown-brown-yellow (b) brown-brown-red (c) brown-red-orange (d) brown-brown-orange
  40. 40.🌈 A resistor has the colour bands blue, orange, brown. What is its value (in ohms)?

Answer key

  1. 290
  2. 7.6
  3. 5 %
  4. 23
  5. grey-orange-red
  6. 7
  7. 4300
  8. 1900
  9. 7500
  10. the one nearest an end
  11. 3400
  12. 5.7
  13. 5
  14. 110
  15. red-green-orange
  16. 2.7
  17. green-orange-orange
  18. 6.4
  19. 4.6
  20. blue-white-red
  21. red-orange-orange
  22. 9.2
  23. 8.7
  24. 4
  25. red-black-red
  26. 2
  27. grey-red-red
  28. violet-green-brown
  29. 1
  30. 0
  31. 9
  32. 6300
  33. 8.1
  34. green-red-brown
  35. 77000
  36. 8.9
  37. 20000
  38. white-green-brown
  39. brown-brown-orange
  40. 630

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