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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 455 · 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 brown, white, orange. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does white stand for?
  3. 3.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does yellow stand for?
  5. 5.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) yellow-black-black (b) yellow-orange-black (c) orange-black-brown (d) orange-black-black
  8. 8.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) red-orange-brown (b) red-orange-black (c) orange-orange-black (d) orange-red-black
  11. 11.🌈 In the resistor colour code, which number does violet stand for?
  12. 12.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does black stand for?
  14. 14.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) brown-grey-black (b) grey-brown-black (c) grey-brown-brown (d) white-brown-black
  16. 16.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  18. 18.🌈 In the resistor colour code, which number does red stand for?
  19. 19.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  20. 20.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) brown-green-brown (b) green-brown-red (c) green-brown-brown (d) green-brown-black
  23. 23.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  24. 24.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands yellow, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  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 orange stand for?
  28. 28.🌈 A resistor has the colour bands white, orange, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) red-black-brown (b) orange-red-brown (c) red-black-red (d) red-black-black
  31. 31.🌈 A resistor has the colour bands yellow, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) white-grey-brown (b) white-grey-black (c) brown-grey-black (d) grey-white-black
  33. 33.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) brown-red-orange (b) brown-red-brown (c) brown-red-red (d) red-brown-red
  35. 35.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 In the resistor colour code, which number does green stand for?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) blue-violet-brown (b) violet-blue-red (c) violet-blue-black (d) violet-blue-brown
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9100 Ω resistor? (a) white-brown-orange (b) brown-white-red (c) white-brown-brown (d) white-brown-red
  39. 39.🌈 In the resistor colour code, which number does grey stand for?
  40. 40.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?

Answer key

  1. 19000
  2. 9
  3. 1.1
  4. 4
  5. 620
  6. 37
  7. orange-black-black
  8. 8
  9. 3300
  10. red-orange-black
  11. 7
  12. 4.2
  13. 0
  14. 950
  15. grey-brown-black
  16. 68
  17. 11000
  18. 2
  19. 23
  20. the one nearest an end
  21. 1
  22. green-brown-brown
  23. 5 %
  24. 910
  25. 460
  26. 6
  27. 3
  28. 9300
  29. 4.8
  30. red-black-brown
  31. 480
  32. white-grey-black
  33. 910
  34. brown-red-red
  35. 720
  36. 5
  37. violet-blue-brown
  38. white-brown-red
  39. 8
  40. 620

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