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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 601 · 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 white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 480 Ω resistor? (a) yellow-grey-brown (b) yellow-grey-red (c) grey-yellow-brown (d) yellow-grey-black
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) grey-green-brown (b) green-grey-black (c) green-grey-brown (d) green-grey-red
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 550 Ω resistor? (a) green-blue-brown (b) green-green-black (c) green-green-red (d) green-green-brown
  6. 6.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does violet stand for?
  10. 10.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does red stand for?
  12. 12.🌈 In the resistor colour code, which number does green stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68 Ω resistor? (a) blue-grey-black (b) blue-grey-brown (c) violet-grey-black (d) grey-blue-black
  14. 14.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) red-brown-black (b) brown-black-black (c) brown-black-brown (d) red-black-black
  16. 16.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8200 Ω resistor? (a) grey-red-brown (b) grey-red-red (c) grey-red-orange (d) red-grey-red
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78000 Ω resistor? (a) violet-grey-yellow (b) grey-violet-orange (c) violet-grey-red (d) violet-grey-orange
  19. 19.🌈 In the resistor colour code, which number does brown stand for?
  20. 20.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the gold band (d) the one nearest an end
  21. 21.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77 Ω resistor? (a) grey-violet-black (b) violet-grey-black (c) violet-violet-black (d) violet-violet-brown
  23. 23.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 In the resistor colour code, which number does grey stand for?
  27. 27.🌈 A resistor has the colour bands yellow, orange, orange. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands green, blue, brown. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 750 Ω resistor? (a) violet-green-brown (b) violet-green-red (c) violet-green-black (d) green-violet-brown
  31. 31.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands red, violet, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  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 350 Ω resistor? (a) green-orange-brown (b) orange-green-red (c) orange-green-black (d) orange-green-brown
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-black (b) brown-red-red (c) red-brown-brown (d) brown-red-brown
  40. 40.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?

Answer key

  1. 970
  2. 5 %
  3. yellow-grey-brown
  4. green-grey-brown
  5. green-green-brown
  6. 1.7
  7. 2.1
  8. 64
  9. 7
  10. 290
  11. 2
  12. 5
  13. blue-grey-black
  14. 8.7
  15. brown-black-black
  16. 800
  17. grey-red-red
  18. violet-grey-orange
  19. 1
  20. the one nearest an end
  21. 30000
  22. violet-violet-black
  23. 260
  24. 22000
  25. 760
  26. 8
  27. 43000
  28. 63
  29. 560
  30. violet-green-brown
  31. 10
  32. 270
  33. 3400
  34. 960
  35. 76
  36. 38000
  37. 20000
  38. orange-green-brown
  39. brown-red-brown
  40. 19

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