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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 245 · 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 orange stand for?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-orange-red (b) red-red-brown (c) red-red-orange (d) red-red-red
  3. 3.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the widest gap (d) the one nearest an end
  4. 4.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) blue-brown-orange (b) brown-blue-yellow (c) brown-blue-red (d) brown-blue-orange
  7. 7.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 In the resistor colour code, which number does blue stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) green-brown-orange (b) brown-green-yellow (c) brown-green-red (d) brown-green-orange
  10. 10.🌈 A resistor has the colour bands green, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does red stand for?
  12. 12.🌈 In the resistor colour code, which number does brown stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 410 Ω resistor? (a) yellow-brown-black (b) yellow-brown-brown (c) brown-yellow-brown (d) yellow-brown-red
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 320 Ω resistor? (a) orange-red-red (b) red-orange-brown (c) orange-red-brown (d) orange-red-black
  15. 15.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  19. 19.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29000 Ω resistor? (a) red-white-orange (b) white-red-orange (c) red-white-yellow (d) red-white-red
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 790 Ω resistor? (a) violet-white-black (b) violet-white-red (c) white-violet-brown (d) violet-white-brown
  28. 28.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does yellow stand for?
  32. 32.🌈 In the resistor colour code, which number does grey stand for?
  33. 33.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands green, grey, black. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) brown-orange-red (b) orange-brown-orange (c) orange-brown-red (d) orange-brown-brown
  38. 38.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  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 90 Ω resistor? (a) brown-white-black (b) brown-black-black (c) white-black-brown (d) white-black-black

Answer key

  1. 3
  2. red-red-red
  3. the one nearest an end
  4. 12000
  5. 99
  6. brown-blue-orange
  7. 9.6
  8. 6
  9. brown-green-orange
  10. 530
  11. 2
  12. 1
  13. yellow-brown-brown
  14. orange-red-brown
  15. 1100
  16. 890
  17. 21
  18. 5 %
  19. 120
  20. 21000
  21. 140
  22. 30000
  23. 280
  24. 5.5
  25. 31
  26. red-white-orange
  27. violet-white-brown
  28. 16
  29. 210
  30. 27
  31. 4
  32. 8
  33. 3.1
  34. 620
  35. 520
  36. 58
  37. orange-brown-red
  38. 590
  39. 9
  40. white-black-black

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