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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 837 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) brown-green-brown (b) green-brown-black (c) green-brown-red (d) green-brown-brown
  2. 2.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-violet-black (b) violet-black-black (c) grey-black-black (d) violet-black-brown
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35 Ω resistor? (a) orange-green-black (b) green-orange-black (c) orange-green-brown (d) yellow-green-black
  5. 5.🌈 A resistor has the colour bands violet, violet, orange. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 810 Ω resistor? (a) grey-brown-black (b) grey-brown-red (c) grey-brown-brown (d) brown-grey-brown
  7. 7.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does green stand for?
  10. 10.🌈 A resistor has the colour bands violet, orange, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) green-grey-orange (b) grey-green-orange (c) grey-green-yellow (d) grey-green-red
  13. 13.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  14. 14.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) brown-white-black (b) white-black-brown (c) brown-black-black (d) white-black-black
  16. 16.🌈 A resistor has the colour bands green, brown, orange. What is its value (in ohms)?
  17. 17.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  18. 18.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 In the resistor colour code, which number does orange stand for?
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) blue-brown-orange (b) brown-blue-orange (c) blue-brown-red (d) blue-brown-yellow
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62 Ω resistor? (a) violet-red-black (b) blue-red-brown (c) blue-red-black (d) red-blue-black
  24. 24.🌈 A resistor has the colour bands yellow, white, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, violet, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  28. 28.🌈 In the resistor colour code, which number does violet stand for?
  29. 29.🌈 A resistor has the colour bands orange, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) red-orange-yellow (b) red-orange-red (c) orange-red-orange (d) red-orange-orange
  31. 31.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) grey-black-brown (b) white-black-black (c) grey-black-black (d) white-grey-black
  33. 33.🌈 In the resistor colour code, which number does black stand for?
  34. 34.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
  37. 37.🌈 In the resistor colour code, which number does grey stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) orange-brown-orange (b) orange-brown-red (c) orange-brown-brown (d) brown-orange-red
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) yellow-brown-brown (b) brown-yellow-red (c) brown-yellow-brown (d) brown-yellow-black
  40. 40.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. green-brown-brown
  2. 6.9
  3. violet-black-black
  4. orange-green-black
  5. 77000
  6. grey-brown-brown
  7. 500
  8. 3.1
  9. 5
  10. 7.3
  11. 240
  12. grey-green-orange
  13. 5 %
  14. 610
  15. white-black-black
  16. 51000
  17. the one nearest an end
  18. 8200
  19. 1.3
  20. 3
  21. 1
  22. blue-brown-orange
  23. blue-red-black
  24. 490
  25. 8100
  26. 2700
  27. 98000
  28. 7
  29. 380
  30. red-orange-orange
  31. 690
  32. grey-black-black
  33. 0
  34. 81
  35. 650
  36. 3300
  37. 8
  38. orange-brown-red
  39. brown-yellow-brown
  40. 31

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