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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 798 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 570 Ω resistor? (a) green-violet-black (b) green-violet-red (c) green-violet-brown (d) violet-green-brown
  2. 2.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 820 Ω resistor? (a) grey-red-black (b) red-grey-brown (c) grey-red-red (d) grey-red-brown
  7. 7.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does orange stand for?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  11. 11.🌈 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
  12. 12.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40000 Ω resistor? (a) green-yellow-orange (b) yellow-black-red (c) yellow-black-orange (d) yellow-black-yellow
  14. 14.🌈 A resistor has the colour bands brown, blue, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands blue, violet, orange. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) green-red-brown (b) red-green-brown (c) red-green-black (d) red-green-red
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-black (b) brown-red-black (c) red-brown-brown (d) orange-brown-black
  21. 21.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 540 Ω resistor? (a) green-yellow-red (b) green-yellow-brown (c) green-yellow-black (d) yellow-green-brown
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99000 Ω resistor? (a) white-white-orange (b) white-white-red (c) white-black-orange (d) white-white-yellow
  25. 25.🌈 In the resistor colour code, which number does violet stand for?
  26. 26.🌈 A resistor has the colour bands green, green, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands blue, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1600 Ω resistor? (a) brown-blue-brown (b) blue-brown-red (c) brown-blue-orange (d) brown-blue-red
  30. 30.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-black-black (b) red-black-brown (c) red-black-black (d) orange-red-black
  32. 32.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands violet, violet, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-brown (b) red-orange-red (c) red-orange-black (d) orange-red-brown
  36. 36.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  37. 37.🌈 In the resistor colour code, which number does white stand for?
  38. 38.🌈 In the resistor colour code, which number does green stand for?
  39. 39.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. green-violet-brown
  2. 49
  3. 290
  4. 5
  5. 430
  6. grey-red-brown
  7. 32000
  8. 68
  9. 3
  10. 5 %
  11. the one nearest an end
  12. 240
  13. yellow-black-orange
  14. 160
  15. 620
  16. 51
  17. 84
  18. 67000
  19. red-green-brown
  20. red-brown-black
  21. 1.3
  22. 96
  23. green-yellow-brown
  24. white-white-orange
  25. 7
  26. 5500
  27. 64
  28. 25000
  29. brown-blue-red
  30. 1.4
  31. red-black-black
  32. 25
  33. 7700
  34. 32
  35. red-orange-brown
  36. 59
  37. 9
  38. 5
  39. 7100
  40. 780

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