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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 43 · 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 green, black, black. What is its value (in ohms)?
  2. 2.🌈 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
  3. 3.🌈 A resistor has the colour bands grey, blue, red. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  7. 7.🌈 In the resistor colour code, which number does brown stand for?
  8. 8.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands green, brown, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39000 Ω resistor? (a) white-orange-orange (b) orange-white-yellow (c) orange-white-red (d) orange-white-orange
  12. 12.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49000 Ω resistor? (a) yellow-white-red (b) white-yellow-orange (c) yellow-white-yellow (d) yellow-white-orange
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) green-brown-red (b) brown-green-brown (c) green-brown-brown (d) green-brown-black
  16. 16.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does violet stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88000 Ω resistor? (a) grey-white-orange (b) grey-grey-red (c) grey-grey-yellow (d) grey-grey-orange
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 530 Ω resistor? (a) green-orange-black (b) green-orange-brown (c) orange-green-brown (d) green-orange-red
  20. 20.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands green, red, brown. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72000 Ω resistor? (a) red-violet-orange (b) violet-red-red (c) violet-red-orange (d) violet-red-yellow
  23. 23.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands yellow, white, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 310 Ω resistor? (a) brown-orange-brown (b) orange-brown-red (c) orange-brown-black (d) orange-brown-brown
  30. 30.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands yellow, grey, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does black stand for?
  37. 37.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) brown-black-black (b) red-black-black (c) brown-black-brown (d) red-brown-black
  39. 39.🌈 In the resistor colour code, which number does white stand for?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) red-green-black (b) blue-red-black (c) green-red-brown (d) green-red-black

Answer key

  1. 50
  2. the one nearest an end
  3. 8600
  4. 6.3
  5. 650
  6. 5 %
  7. 1
  8. 2000
  9. 2.8
  10. 5.1
  11. orange-white-orange
  12. 91000
  13. 2.2
  14. yellow-white-orange
  15. green-brown-brown
  16. 220
  17. 7
  18. grey-grey-orange
  19. green-orange-brown
  20. 4.2
  21. 520
  22. violet-red-orange
  23. 470
  24. 3.9
  25. 11000
  26. 490
  27. 250
  28. 7
  29. orange-brown-brown
  30. 2.1
  31. 620
  32. 48000
  33. 290
  34. 36
  35. 6400
  36. 0
  37. 92
  38. brown-black-black
  39. 9
  40. green-red-black

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