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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 540 · 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 25000 Ω resistor? (a) red-green-red (b) green-red-orange (c) red-green-yellow (d) red-green-orange
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) violet-white-black (b) grey-white-black (c) white-violet-black (d) violet-white-brown
  3. 3.🌈 In the resistor colour code, which number does green stand for?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36 Ω resistor? (a) orange-blue-brown (b) yellow-blue-black (c) orange-blue-black (d) blue-orange-black
  5. 5.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands green, red, brown. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1300 Ω resistor? (a) orange-brown-red (b) brown-orange-brown (c) brown-orange-orange (d) brown-orange-red
  9. 9.🌈 In the resistor colour code, which number does violet stand for?
  10. 10.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
  11. 11.🌈 A resistor has the colour bands brown, violet, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86 Ω resistor? (a) white-blue-black (b) grey-blue-brown (c) blue-grey-black (d) grey-blue-black
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-brown (b) red-orange-red (c) red-red-orange (d) red-red-red
  15. 15.🌈 A resistor has the colour bands grey, green, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands violet, white, orange. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 840 Ω resistor? (a) grey-yellow-black (b) grey-yellow-brown (c) yellow-grey-brown (d) grey-yellow-red
  18. 18.🌈 In the resistor colour code, which number does blue stand for?
  19. 19.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  22. 22.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, violet, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does grey stand for?
  32. 32.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 In the resistor colour code, which number does white stand for?
  34. 34.🌈 In the resistor colour code, which number does brown stand for?
  35. 35.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands blue, grey, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?

Answer key

  1. red-green-orange
  2. violet-white-black
  3. 5
  4. orange-blue-black
  5. 8.1
  6. 650
  7. 520
  8. brown-orange-red
  9. 7
  10. the one nearest an end
  11. 17
  12. 190
  13. grey-blue-black
  14. red-red-red
  15. 850
  16. 79000
  17. grey-yellow-brown
  18. 6
  19. 25000
  20. 3.6
  21. 5 %
  22. 9900
  23. 190
  24. 24000
  25. 570
  26. 140
  27. 8100
  28. 51
  29. 64000
  30. 7.8
  31. 8
  32. 8.6
  33. 9
  34. 1
  35. 780
  36. 3.5
  37. 14
  38. 68000
  39. 37
  40. 63

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