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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 673 · 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.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the widest gap (d) the gold band
  2. 2.🌈 In the resistor colour code, which number does green stand for?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) brown-white-brown (b) brown-white-black (c) red-white-black (d) white-brown-black
  5. 5.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands grey, grey, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 In the resistor colour code, which number does orange stand for?
  9. 9.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands white, grey, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) green-grey-orange (b) grey-green-red (c) grey-green-orange (d) grey-green-yellow
  12. 12.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does blue stand for?
  14. 14.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22000 Ω resistor? (a) red-red-red (b) red-orange-orange (c) red-red-yellow (d) red-red-orange
  16. 16.🌈 In the resistor colour code, which number does white stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) blue-red-red (b) red-blue-brown (c) blue-red-brown (d) blue-red-black
  18. 18.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands yellow, blue, red. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7800 Ω resistor? (a) grey-violet-red (b) violet-grey-brown (c) violet-grey-red (d) violet-grey-orange
  21. 21.🌈 In the resistor colour code, which number does red stand for?
  22. 22.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands yellow, blue, black. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) brown-yellow-black (b) brown-yellow-brown (c) yellow-brown-brown (d) brown-yellow-red
  27. 27.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands violet, grey, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35000 Ω resistor? (a) orange-green-red (b) orange-green-orange (c) orange-green-yellow (d) green-orange-orange
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31000 Ω resistor? (a) orange-brown-yellow (b) orange-brown-red (c) brown-orange-orange (d) orange-brown-orange
  35. 35.🌈 In the resistor colour code, which number does grey stand for?
  36. 36.🌈 A resistor has the colour bands violet, green, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands white, orange, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does black stand for?

Answer key

  1. the one nearest an end
  2. 5
  3. 5 %
  4. brown-white-black
  5. 990
  6. 8.8
  7. 120
  8. 3
  9. 74
  10. 98
  11. grey-green-orange
  12. 42
  13. 6
  14. 510
  15. red-red-orange
  16. 9
  17. blue-red-brown
  18. 43
  19. 4600
  20. violet-grey-red
  21. 2
  22. 9700
  23. 67
  24. 1.7
  25. 46
  26. brown-yellow-brown
  27. 9.8
  28. 1.4
  29. 660
  30. 20
  31. 7.8
  32. 9.9
  33. orange-green-orange
  34. orange-brown-orange
  35. 8
  36. 75
  37. 890
  38. 930
  39. 91000
  40. 0

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