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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 150 · 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.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 In the resistor colour code, which number does white stand for?
  3. 3.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52000 Ω resistor? (a) green-red-red (b) red-green-orange (c) green-red-yellow (d) green-red-orange
  6. 6.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  7. 7.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  8. 8.🌈 A resistor has the colour bands red, orange, red. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does brown stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) green-black-brown (b) blue-black-black (c) green-black-black (d) blue-green-black
  11. 11.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) orange-black-orange (b) orange-black-brown (c) orange-black-red (d) yellow-orange-red
  13. 13.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 790 Ω resistor? (a) violet-white-red (b) white-violet-brown (c) violet-white-black (d) violet-white-brown
  16. 16.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
  18. 18.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  19. 19.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands orange, grey, red. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12000 Ω resistor? (a) brown-red-yellow (b) brown-red-red (c) brown-red-orange (d) red-brown-orange
  22. 22.🌈 In the resistor colour code, which number does green stand for?
  23. 23.🌈 A resistor has the colour bands grey, green, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 In the resistor colour code, which number does violet stand for?
  25. 25.🌈 In the resistor colour code, which number does black stand for?
  26. 26.🌈 A resistor has the colour bands green, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 330 Ω resistor? (a) orange-orange-brown (b) orange-orange-red (c) orange-orange-black (d) orange-yellow-brown
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 680 Ω resistor? (a) blue-grey-black (b) blue-grey-red (c) blue-grey-brown (d) grey-blue-brown
  29. 29.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) white-orange-black (b) orange-white-brown (c) white-orange-red (d) white-orange-brown
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1300 Ω resistor? (a) orange-brown-red (b) brown-orange-orange (c) brown-orange-red (d) brown-orange-brown
  33. 33.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 370 Ω resistor? (a) orange-violet-brown (b) violet-orange-brown (c) orange-violet-black (d) orange-violet-red
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 320 Ω resistor? (a) orange-red-red (b) red-orange-brown (c) orange-red-black (d) orange-red-brown
  36. 36.🌈 A resistor has the colour bands brown, green, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 720 Ω resistor? (a) violet-red-black (b) violet-red-red (c) red-violet-brown (d) violet-red-brown
  39. 39.🌈 In the resistor colour code, which number does yellow stand for?
  40. 40.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 8.6
  2. 9
  3. 3.9
  4. 91
  5. green-red-orange
  6. 64
  7. the one nearest an end
  8. 2300
  9. 1
  10. green-black-black
  11. 60
  12. orange-black-red
  13. 700
  14. 800
  15. violet-white-brown
  16. 18
  17. 610
  18. 5 %
  19. 620
  20. 3800
  21. brown-red-orange
  22. 5
  23. 850
  24. 7
  25. 0
  26. 530
  27. orange-orange-brown
  28. blue-grey-brown
  29. 53000
  30. 23
  31. white-orange-brown
  32. brown-orange-red
  33. 3300
  34. orange-violet-brown
  35. orange-red-brown
  36. 150
  37. 640
  38. violet-red-brown
  39. 4
  40. 180

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