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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 949 · 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 red, red, black. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does black stand for?
  3. 3.🌈 A resistor has the colour bands yellow, white, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 In the resistor colour code, which number does violet stand for?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 250 Ω resistor? (a) green-red-brown (b) red-green-black (c) red-green-red (d) red-green-brown
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 400 Ω resistor? (a) yellow-black-black (b) green-yellow-brown (c) yellow-black-red (d) yellow-black-brown
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41000 Ω resistor? (a) brown-yellow-orange (b) yellow-brown-orange (c) yellow-brown-yellow (d) yellow-brown-red
  9. 9.🌈 A resistor has the colour bands violet, white, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 In the resistor colour code, which number does red stand for?
  11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  12. 12.🌈 In the resistor colour code, which number does blue stand for?
  13. 13.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands orange, brown, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands green, violet, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands white, green, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33 Ω resistor? (a) orange-orange-brown (b) orange-orange-black (c) yellow-orange-black (d) orange-yellow-black
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 680 Ω resistor? (a) blue-grey-black (b) grey-blue-brown (c) blue-grey-red (d) blue-grey-brown
  22. 22.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 970 Ω resistor? (a) white-violet-black (b) white-violet-red (c) white-violet-brown (d) violet-white-brown
  24. 24.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) orange-yellow-red (b) yellow-orange-red (c) orange-yellow-orange (d) orange-yellow-brown
  26. 26.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62 Ω resistor? (a) violet-red-black (b) blue-red-black (c) red-blue-black (d) blue-red-brown
  28. 28.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands grey, violet, brown. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does orange stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) brown-violet-brown (b) violet-brown-brown (c) brown-violet-black (d) brown-violet-red
  35. 35.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands orange, orange, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?

Answer key

  1. 22
  2. 0
  3. 49
  4. 230
  5. 7
  6. red-green-brown
  7. yellow-black-brown
  8. yellow-brown-orange
  9. 7.9
  10. 2
  11. 5 %
  12. 6
  13. 21
  14. 3100
  15. 31000
  16. 5.7
  17. 95
  18. 6.7
  19. 4800
  20. orange-orange-black
  21. blue-grey-brown
  22. 9000
  23. white-violet-brown
  24. the one nearest an end
  25. orange-yellow-red
  26. 1.6
  27. blue-red-black
  28. 21000
  29. 16000
  30. 890
  31. 62000
  32. 870
  33. 3
  34. brown-violet-brown
  35. 820
  36. 14000
  37. 16
  38. 72000
  39. 330
  40. 8100

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