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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 966 · 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.🌈 In the resistor colour code, which number does yellow stand for?
  2. 2.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  3. 3.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  4. 4.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) red-grey-black (b) grey-red-black (c) red-grey-brown (d) orange-grey-black
  6. 6.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does blue stand for?
  8. 8.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  10. 10.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31000 Ω resistor? (a) orange-brown-red (b) orange-brown-yellow (c) orange-brown-orange (d) brown-orange-orange
  12. 12.🌈 A resistor has the colour bands grey, brown, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands white, blue, brown. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does orange stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) blue-grey-black (b) green-grey-brown (c) grey-green-black (d) green-grey-black
  17. 17.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands blue, blue, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14 Ω resistor? (a) brown-yellow-black (b) yellow-brown-black (c) brown-yellow-brown (d) red-yellow-black
  22. 22.🌈 In the resistor colour code, which number does red stand for?
  23. 23.🌈 A resistor has the colour bands violet, green, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) green-red-brown (b) green-red-black (c) red-green-black (d) blue-red-black
  29. 29.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) yellow-grey-black (b) white-yellow-black (c) grey-yellow-brown (d) grey-yellow-black
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) red-brown-brown (b) brown-red-black (c) red-brown-black (d) orange-brown-black
  32. 32.🌈 A resistor has the colour bands yellow, black, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) red-yellow-black (b) green-red-black (c) yellow-red-black (d) yellow-red-brown
  35. 35.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18000 Ω resistor? (a) brown-grey-yellow (b) grey-brown-orange (c) brown-grey-red (d) brown-grey-orange
  37. 37.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 210 Ω resistor? (a) red-brown-red (b) red-brown-black (c) brown-red-brown (d) red-brown-brown
  39. 39.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 4
  2. 91
  3. the one nearest an end
  4. 22
  5. red-grey-black
  6. 53
  7. 6
  8. 730
  9. 5 %
  10. 570
  11. orange-brown-orange
  12. 810
  13. 8
  14. 960
  15. 3
  16. green-grey-black
  17. 780
  18. 19
  19. 6600
  20. 120
  21. brown-yellow-black
  22. 2
  23. 75000
  24. 2.7
  25. 1
  26. 90000
  27. 790
  28. green-red-black
  29. 40
  30. grey-yellow-black
  31. red-brown-black
  32. 40
  33. 67
  34. yellow-red-black
  35. 77
  36. brown-grey-orange
  37. 17000
  38. red-brown-brown
  39. 3.7
  40. 21

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