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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 330 · 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 990 Ω resistor? (a) white-white-red (b) white-black-brown (c) white-white-black (d) white-white-brown
  2. 2.🌈 A resistor has the colour bands green, brown, orange. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  7. 7.🌈 In the resistor colour code, which number does green stand for?
  8. 8.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands brown, violet, orange. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does red stand for?
  11. 11.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) any band (d) the widest gap
  12. 12.🌈 In the resistor colour code, which number does white stand for?
  13. 13.🌈 In the resistor colour code, which number does blue stand for?
  14. 14.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86000 Ω resistor? (a) grey-blue-yellow (b) blue-grey-orange (c) grey-blue-red (d) grey-blue-orange
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) green-grey-red (b) green-grey-brown (c) grey-green-brown (d) green-grey-black
  17. 17.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  19. 19.🌈 In the resistor colour code, which number does yellow stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32 Ω resistor? (a) red-orange-black (b) yellow-red-black (c) orange-red-brown (d) orange-red-black
  21. 21.🌈 A resistor has the colour bands green, green, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does black stand for?
  23. 23.🌈 A resistor has the colour bands red, violet, red. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands white, orange, brown. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74 Ω resistor? (a) yellow-violet-black (b) violet-yellow-black (c) grey-yellow-black (d) violet-yellow-brown
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39000 Ω resistor? (a) orange-white-orange (b) orange-white-red (c) orange-white-yellow (d) white-orange-orange
  28. 28.🌈 A resistor has the colour bands blue, red, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62000 Ω resistor? (a) red-blue-orange (b) blue-red-yellow (c) blue-red-red (d) blue-red-orange
  30. 30.🌈 In the resistor colour code, which number does brown stand for?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66 Ω resistor? (a) blue-blue-black (b) violet-blue-black (c) blue-violet-black (d) blue-blue-brown
  32. 32.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56 Ω resistor? (a) blue-green-black (b) green-blue-black (c) blue-blue-black (d) green-blue-brown
  36. 36.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands green, red, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands violet, white, red. What is its value (in ohms)?

Answer key

  1. white-white-brown
  2. 51000
  3. 7.8
  4. 120
  5. 27
  6. 5 %
  7. 5
  8. 38
  9. 17000
  10. 2
  11. the one nearest an end
  12. 9
  13. 6
  14. 670
  15. grey-blue-orange
  16. green-grey-brown
  17. 620
  18. 100
  19. 4
  20. orange-red-black
  21. 55
  22. 0
  23. 2700
  24. 5.9
  25. 930
  26. violet-yellow-black
  27. orange-white-orange
  28. 6.2
  29. blue-red-orange
  30. 1
  31. blue-blue-black
  32. 9
  33. 1.2
  34. 2.6
  35. green-blue-black
  36. 90
  37. 30000
  38. 6.7
  39. 52000
  40. 7900

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