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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 371 · 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, yellow, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-green-black (b) yellow-yellow-black (c) yellow-yellow-brown (d) green-yellow-black
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9200 Ω resistor? (a) white-red-brown (b) white-red-red (c) red-white-red (d) white-red-orange
  5. 5.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-white-orange (b) white-white-red (c) white-black-red (d) white-white-brown
  7. 7.🌈 A resistor has the colour bands yellow, violet, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8100 Ω resistor? (a) grey-brown-orange (b) brown-grey-red (c) grey-brown-red (d) grey-brown-brown
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  11. 11.🌈 In the resistor colour code, which number does brown stand for?
  12. 12.🌈 In the resistor colour code, which number does black stand for?
  13. 13.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does violet stand for?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6600 Ω resistor? (a) blue-blue-brown (b) blue-blue-orange (c) blue-violet-red (d) blue-blue-red
  16. 16.🌈 In the resistor colour code, which number does white stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) blue-red-yellow (b) red-blue-orange (c) blue-red-red (d) blue-red-orange
  18. 18.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69 Ω resistor? (a) white-blue-black (b) blue-white-brown (c) violet-white-black (d) blue-white-black
  20. 20.🌈 A resistor has the colour bands brown, red, red. What is its value (in ohms)?
  21. 21.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) the gold band (d) any band
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) red-green-red (b) red-green-black (c) green-red-brown (d) red-green-brown
  23. 23.🌈 In the resistor colour code, which number does blue stand for?
  24. 24.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) blue-red-black (b) blue-red-brown (c) blue-red-red (d) red-blue-brown
  26. 26.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does grey stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82 Ω resistor? (a) grey-red-black (b) red-grey-black (c) grey-red-brown (d) white-red-black
  29. 29.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 390 Ω resistor? (a) orange-white-black (b) orange-white-red (c) orange-white-brown (d) white-orange-brown
  34. 34.🌈 A resistor has the colour bands orange, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does red stand for?
  37. 37.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) white-grey-black (b) white-grey-red (c) grey-white-brown (d) white-grey-brown
  39. 39.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?

Answer key

  1. 2.4
  2. 1
  3. yellow-yellow-black
  4. white-red-red
  5. 1.6
  6. white-white-red
  7. 47
  8. 230
  9. grey-brown-red
  10. 5 %
  11. 1
  12. 0
  13. 39000
  14. 7
  15. blue-blue-red
  16. 9
  17. blue-red-orange
  18. 2.7
  19. blue-white-black
  20. 1200
  21. the one nearest an end
  22. red-green-brown
  23. 6
  24. 2000
  25. blue-red-brown
  26. 57
  27. 8
  28. grey-red-black
  29. 950
  30. 430
  31. 7000
  32. 22
  33. orange-white-brown
  34. 380
  35. 34000
  36. 2
  37. 25
  38. white-grey-brown
  39. 8.1
  40. 52000

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