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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 757 · 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 green stand for?
  2. 2.🌈 A resistor has the colour bands white, grey, red. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52000 Ω resistor? (a) red-green-orange (b) green-red-yellow (c) green-red-red (d) green-red-orange
  5. 5.🌈 In the resistor colour code, which number does yellow stand for?
  6. 6.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands orange, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  12. 12.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) grey-white-black (b) white-grey-brown (c) white-grey-black (d) brown-grey-black
  14. 14.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands grey, yellow, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands brown, white, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 In the resistor colour code, which number does blue stand for?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) grey-black-yellow (b) grey-black-orange (c) white-grey-orange (d) grey-black-red
  20. 20.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does violet stand for?
  23. 23.🌈 A resistor has the colour bands brown, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands blue, brown, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 800 Ω resistor? (a) grey-black-red (b) grey-black-black (c) white-grey-brown (d) grey-black-brown
  27. 27.🌈 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
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 60000 Ω resistor? (a) violet-blue-orange (b) blue-black-orange (c) blue-black-yellow (d) blue-black-red
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-black (b) white-black-brown (c) white-black-red (d) brown-white-brown
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-brown (b) red-white-red (c) white-red-brown (d) red-white-black
  31. 31.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) brown-red-brown (b) red-red-black (c) red-brown-black (d) brown-red-black
  33. 33.🌈 A resistor has the colour bands orange, red, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-black (b) red-brown-brown (c) brown-red-brown (d) brown-red-red
  36. 36.🌈 A resistor has the colour bands yellow, violet, orange. What is its value (in ohms)?
  37. 37.🌈 In the resistor colour code, which number does white stand for?
  38. 38.🌈 In the resistor colour code, which number does black stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) violet-orange-orange (b) orange-violet-red (c) orange-violet-yellow (d) orange-violet-orange
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 990 Ω resistor? (a) white-white-brown (b) white-white-red (c) white-black-brown (d) white-white-black

Answer key

  1. 5
  2. 9800
  3. 20
  4. green-red-orange
  5. 4
  6. 250
  7. 160
  8. 8400
  9. 380
  10. 28
  11. 590
  12. 5 %
  13. white-grey-black
  14. 35
  15. 84000
  16. 190
  17. 19
  18. 6
  19. grey-black-orange
  20. 80
  21. 580
  22. 7
  23. 130
  24. 61
  25. 83000
  26. grey-black-brown
  27. the one nearest an end
  28. blue-black-orange
  29. white-black-brown
  30. red-white-brown
  31. 41
  32. brown-red-black
  33. 3200
  34. 82
  35. brown-red-brown
  36. 47000
  37. 9
  38. 0
  39. orange-violet-orange
  40. white-white-brown

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