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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 477 · 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 yellow stand for?
  2. 2.🌈 In the resistor colour code, which number does black stand for?
  3. 3.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) the gold band (d) any band
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) violet-blue-brown (b) grey-blue-black (c) violet-blue-black (d) blue-violet-black
  5. 5.🌈 In the resistor colour code, which number does violet stand for?
  6. 6.🌈 A resistor has the colour bands grey, green, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does grey stand for?
  12. 12.🌈 A resistor has the colour bands violet, green, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-black (b) red-grey-red (c) grey-red-brown (d) red-grey-brown
  14. 14.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands white, grey, red. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does orange stand for?
  18. 18.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands white, grey, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  21. 21.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 50 % (d) 0 %
  22. 22.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) grey-white-brown (b) white-grey-red (c) white-grey-black (d) white-grey-brown
  25. 25.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-brown (b) grey-violet-red (c) grey-violet-black (d) violet-grey-brown
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) red-orange-orange (b) red-orange-red (c) orange-red-red (d) red-orange-brown
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2400 Ω resistor? (a) red-yellow-brown (b) red-yellow-red (c) yellow-red-red (d) red-yellow-orange
  30. 30.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 In the resistor colour code, which number does green stand for?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) green-red-black (b) yellow-red-black (c) yellow-red-brown (d) red-yellow-black
  34. 34.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 In the resistor colour code, which number does white stand for?
  37. 37.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 In the resistor colour code, which number does red stand for?
  39. 39.🌈 In the resistor colour code, which number does blue stand for?
  40. 40.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?

Answer key

  1. 4
  2. 0
  3. the one nearest an end
  4. violet-blue-black
  5. 7
  6. 850
  7. 42
  8. 570
  9. 1700
  10. 63
  11. 8
  12. 7.5
  13. red-grey-brown
  14. 7.6
  15. 49
  16. 9800
  17. 3
  18. 14000
  19. 98
  20. 39000
  21. 5 %
  22. 41
  23. 8.7
  24. white-grey-brown
  25. 3.7
  26. 37
  27. grey-violet-brown
  28. red-orange-red
  29. red-yellow-red
  30. 580
  31. 8.3
  32. 5
  33. yellow-red-black
  34. 6400
  35. 500
  36. 9
  37. 1.5
  38. 2
  39. 6
  40. 18

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