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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 321 · 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 grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5300 Ω resistor? (a) green-orange-brown (b) green-orange-orange (c) green-orange-red (d) orange-green-red
  3. 3.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands grey, yellow, brown. What is its value (in ohms)?
  5. 5.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  6. 6.🌈 In the resistor colour code, which number does violet stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 690 Ω resistor? (a) blue-white-brown (b) blue-white-red (c) white-blue-brown (d) blue-white-black
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) yellow-black-brown (b) green-black-black (c) yellow-black-black (d) green-yellow-black
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4500 Ω resistor? (a) green-yellow-red (b) yellow-green-orange (c) yellow-green-red (d) yellow-green-brown
  10. 10.🌈 In the resistor colour code, which number does blue stand for?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 60000 Ω resistor? (a) violet-blue-orange (b) blue-black-orange (c) blue-black-red (d) blue-black-yellow
  12. 12.🌈 In the resistor colour code, which number does black stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) red-orange-orange (b) red-orange-red (c) orange-red-red (d) red-orange-brown
  14. 14.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does green stand for?
  16. 16.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does yellow stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4300 Ω resistor? (a) orange-yellow-red (b) yellow-orange-orange (c) yellow-orange-brown (d) yellow-orange-red
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-red-red (b) brown-brown-orange (c) brown-brown-brown (d) brown-brown-red
  20. 20.🌈 In the resistor colour code, which number does brown stand for?
  21. 21.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  22. 22.🌈 In the resistor colour code, which number does red stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 60 Ω resistor? (a) violet-black-black (b) blue-black-black (c) blue-black-brown (d) violet-blue-black
  24. 24.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands white, green, brown. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 350 Ω resistor? (a) orange-green-red (b) orange-green-brown (c) orange-green-black (d) green-orange-brown
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) yellow-red-brown (b) yellow-red-black (c) yellow-red-red (d) red-yellow-brown
  31. 31.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5100 Ω resistor? (a) brown-green-red (b) green-brown-red (c) green-brown-brown (d) green-brown-orange
  33. 33.🌈 A resistor has the colour bands brown, white, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 410 Ω resistor? (a) yellow-brown-red (b) brown-yellow-brown (c) yellow-brown-black (d) yellow-brown-brown
  35. 35.🌈 A resistor has the colour bands red, grey, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) orange-black-red (b) yellow-orange-orange (c) orange-black-yellow (d) orange-black-orange
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) brown-yellow-black (b) green-brown-black (c) yellow-brown-black (d) yellow-brown-brown
  40. 40.🌈 In the resistor colour code, which number does grey stand for?

Answer key

  1. 8.3
  2. green-orange-red
  3. 51
  4. 840
  5. the one nearest an end
  6. 7
  7. blue-white-brown
  8. yellow-black-black
  9. yellow-green-red
  10. 6
  11. blue-black-orange
  12. 0
  13. red-orange-red
  14. 500
  15. 5
  16. 63
  17. 4
  18. yellow-orange-red
  19. brown-brown-red
  20. 1
  21. 5 %
  22. 2
  23. blue-black-black
  24. 27000
  25. 4200
  26. 7.2
  27. 1.6
  28. 950
  29. orange-green-brown
  30. yellow-red-brown
  31. 22000
  32. green-brown-red
  33. 1.9
  34. yellow-brown-brown
  35. 2800
  36. 6900
  37. 710
  38. orange-black-orange
  39. yellow-brown-black
  40. 8

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