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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 254 · 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 orange, red, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) the widest gap (d) any band
  4. 4.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does green stand for?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) violet-red-brown (b) red-violet-brown (c) red-violet-black (d) red-violet-red
  7. 7.🌈 A resistor has the colour bands white, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands red, violet, brown. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74000 Ω resistor? (a) violet-yellow-red (b) violet-yellow-yellow (c) yellow-violet-orange (d) violet-yellow-orange
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
  11. 11.🌈 In the resistor colour code, which number does black stand for?
  12. 12.🌈 In the resistor colour code, which number does red stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1900 Ω resistor? (a) white-brown-red (b) brown-white-brown (c) brown-white-red (d) brown-white-orange
  14. 14.🌈 A resistor has the colour bands violet, green, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands white, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands orange, blue, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands violet, orange, red. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11 Ω resistor? (a) brown-brown-black (b) brown-brown-brown (c) brown-red-black (d) red-brown-black
  25. 25.🌈 A resistor has the colour bands red, blue, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 780 Ω resistor? (a) violet-grey-red (b) violet-grey-black (c) violet-grey-brown (d) grey-violet-brown
  28. 28.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands yellow, violet, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9700 Ω resistor? (a) white-violet-brown (b) white-violet-orange (c) violet-white-red (d) white-violet-red
  31. 31.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 In the resistor colour code, which number does blue stand for?
  34. 34.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) brown-white-black (b) red-white-black (c) brown-white-brown (d) white-brown-black
  36. 36.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 In the resistor colour code, which number does grey stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) violet-grey-black (b) grey-violet-brown (c) grey-violet-black (d) white-violet-black
  39. 39.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does orange stand for?

Answer key

  1. 32
  2. 5.5
  3. the one nearest an end
  4. 4700
  5. 5
  6. red-violet-brown
  7. 980
  8. 270
  9. violet-yellow-orange
  10. 5 %
  11. 0
  12. 2
  13. brown-white-red
  14. 7.5
  15. 1.1
  16. 14
  17. 910
  18. 17
  19. 20
  20. 360
  21. 36
  22. 20
  23. 7300
  24. brown-brown-black
  25. 260
  26. 84
  27. violet-grey-brown
  28. 33
  29. 47
  30. white-violet-red
  31. 9.6
  32. 8.2
  33. 6
  34. 39000
  35. brown-white-black
  36. 6
  37. 8
  38. grey-violet-black
  39. 340
  40. 3

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