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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 734 · 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, black, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands blue, green, black. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does yellow stand for?
  4. 4.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does green stand for?
  6. 6.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82000 Ω resistor? (a) grey-red-orange (b) grey-red-yellow (c) grey-red-red (d) red-grey-orange
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  9. 9.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does violet stand for?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-violet-black (b) grey-black-black (c) violet-black-brown (d) violet-black-black
  12. 12.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands yellow, violet, orange. What is its value in kilo-ohms (kΩ)? =
  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 green, black, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does brown stand for?
  17. 17.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 300 Ω resistor? (a) orange-black-brown (b) orange-black-black (c) yellow-orange-brown (d) orange-black-red
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) red-violet-red (b) violet-red-brown (c) violet-red-red (d) violet-red-orange
  20. 20.🌈 In the resistor colour code, which number does blue stand for?
  21. 21.🌈 A resistor has the colour bands white, blue, red. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 490 Ω resistor? (a) yellow-white-black (b) yellow-white-brown (c) white-yellow-brown (d) yellow-white-red
  26. 26.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands yellow, yellow, red. What is its value (in ohms)?
  28. 28.🌈 In the resistor colour code, which number does red stand for?
  29. 29.🌈 A resistor has the colour bands green, yellow, red. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) yellow-brown-red (b) yellow-brown-orange (c) yellow-brown-yellow (d) brown-yellow-orange
  31. 31.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) the one nearest an end (d) any band
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66000 Ω resistor? (a) blue-blue-orange (b) blue-blue-red (c) blue-blue-yellow (d) blue-violet-orange
  33. 33.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4200 Ω resistor? (a) yellow-red-red (b) red-yellow-red (c) yellow-red-orange (d) yellow-red-brown
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) brown-yellow-black (b) yellow-brown-brown (c) green-brown-black (d) yellow-brown-black
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 670 Ω resistor? (a) blue-violet-brown (b) violet-blue-brown (c) blue-violet-red (d) blue-violet-black
  37. 37.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does grey stand for?

Answer key

  1. 100
  2. 65
  3. 4
  4. 22
  5. 5
  6. 26
  7. grey-red-orange
  8. 5 %
  9. 21
  10. 7
  11. violet-black-black
  12. 38
  13. 47
  14. 760
  15. 50
  16. 1
  17. 61
  18. orange-black-brown
  19. violet-red-red
  20. 6
  21. 9600
  22. 85000
  23. 89
  24. 59
  25. yellow-white-brown
  26. 160
  27. 4400
  28. 2
  29. 5400
  30. yellow-brown-orange
  31. the one nearest an end
  32. blue-blue-orange
  33. 300
  34. yellow-red-red
  35. yellow-brown-black
  36. blue-violet-brown
  37. 8.6
  38. 84
  39. 820
  40. 8

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