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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 475 · 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 brown stand for?
  2. 2.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-brown (b) white-black-black (c) white-black-red (d) brown-white-brown
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-red (b) red-violet-black (c) violet-red-brown (d) red-violet-brown
  6. 6.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 In the resistor colour code, which number does yellow stand for?
  11. 11.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does black stand for?
  13. 13.🌈 A resistor has the colour bands blue, grey, red. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does red stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8200 Ω resistor? (a) grey-red-brown (b) grey-red-red (c) red-grey-red (d) grey-red-orange
  17. 17.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
  19. 19.🌈 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
  20. 20.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does violet stand for?
  23. 23.🌈 In the resistor colour code, which number does grey stand for?
  24. 24.🌈 A resistor has the colour bands violet, green, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 340 Ω resistor? (a) orange-yellow-red (b) orange-yellow-brown (c) orange-yellow-black (d) yellow-orange-brown
  26. 26.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does white stand for?
  28. 28.🌈 A resistor has the colour bands grey, green, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, grey, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) red-brown-red (b) brown-black-brown (c) brown-black-red (d) brown-black-orange
  31. 31.🌈 A resistor has the colour bands orange, black, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 54000 Ω resistor? (a) green-yellow-red (b) yellow-green-orange (c) green-yellow-yellow (d) green-yellow-orange
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-orange-red (b) orange-yellow-red (c) orange-orange-brown (d) orange-orange-orange
  34. 34.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75000 Ω resistor? (a) green-violet-orange (b) violet-green-yellow (c) violet-green-red (d) violet-green-orange
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) blue-red-orange (b) blue-red-brown (c) blue-red-red (d) red-blue-red
  37. 37.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does green stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) red-violet-orange (b) red-violet-yellow (c) violet-red-orange (d) red-violet-red
  40. 40.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?

Answer key

  1. 1
  2. 63
  3. white-black-brown
  4. 5 %
  5. red-violet-brown
  6. 680
  7. 400
  8. 42
  9. 680
  10. 4
  11. 15
  12. 0
  13. 6800
  14. 910
  15. 2
  16. grey-red-red
  17. 3200
  18. 99000
  19. the one nearest an end
  20. 740
  21. 1400
  22. 7
  23. 8
  24. 75
  25. orange-yellow-brown
  26. 6
  27. 9
  28. 850
  29. 28
  30. brown-black-red
  31. 30
  32. green-yellow-orange
  33. orange-orange-red
  34. 90000
  35. violet-green-orange
  36. blue-red-red
  37. 8000
  38. 5
  39. red-violet-orange
  40. 62

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