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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 490 · 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 violet, violet, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands white, red, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands yellow, blue, red. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  8. 8.🌈 In the resistor colour code, which number does orange stand for?
  9. 9.🌈 In the resistor colour code, which number does violet stand for?
  10. 10.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the gold band (d) the widest gap
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9000 Ω resistor? (a) white-black-brown (b) white-black-orange (c) white-black-red (d) brown-white-red
  13. 13.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does black stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2400 Ω resistor? (a) red-yellow-orange (b) red-yellow-brown (c) yellow-red-red (d) red-yellow-red
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-red (b) red-black-yellow (c) orange-red-orange (d) red-black-orange
  23. 23.🌈 In the resistor colour code, which number does red stand for?
  24. 24.🌈 In the resistor colour code, which number does yellow stand for?
  25. 25.🌈 In the resistor colour code, which number does blue stand for?
  26. 26.🌈 A resistor has the colour bands green, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands brown, white, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13 Ω resistor? (a) orange-brown-black (b) brown-orange-brown (c) red-orange-black (d) brown-orange-black
  30. 30.🌈 A resistor has the colour bands grey, violet, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) brown-orange-black (b) orange-white-black (c) white-orange-black (d) white-orange-brown
  32. 32.🌈 A resistor has the colour bands grey, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands blue, white, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does brown stand for?
  36. 36.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands grey, grey, brown. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86000 Ω resistor? (a) grey-blue-yellow (b) grey-blue-orange (c) grey-blue-red (d) blue-grey-orange
  39. 39.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94000 Ω resistor? (a) yellow-white-orange (b) white-yellow-yellow (c) white-yellow-red (d) white-yellow-orange

Answer key

  1. 77
  2. 9.2
  3. 680
  4. 53
  5. 4600
  6. 81
  7. 5 %
  8. 3
  9. 7
  10. 9.1
  11. the one nearest an end
  12. white-black-red
  13. 3.3
  14. 89
  15. 62
  16. 810
  17. 20
  18. 390
  19. 4700
  20. 0
  21. red-yellow-red
  22. red-black-orange
  23. 2
  24. 4
  25. 6
  26. 530
  27. 190
  28. 24
  29. brown-orange-black
  30. 87
  31. white-orange-black
  32. 880
  33. 690
  34. 910
  35. 1
  36. 1500
  37. 880
  38. grey-blue-orange
  39. 28000
  40. white-yellow-orange

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