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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 201 · 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, black, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 In the resistor colour code, which number does black stand for?
  3. 3.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands yellow, green, black. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) blue-brown-yellow (b) blue-brown-orange (c) brown-blue-orange (d) blue-brown-red
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) yellow-black-black (b) orange-black-black (c) yellow-orange-black (d) orange-black-brown
  13. 13.🌈 A resistor has the colour bands orange, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
  15. 15.🌈 In the resistor colour code, which number does green stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3900 Ω resistor? (a) orange-white-red (b) orange-white-brown (c) orange-white-orange (d) white-orange-red
  17. 17.🌈 In the resistor colour code, which number does red stand for?
  18. 18.🌈 In the resistor colour code, which number does orange stand for?
  19. 19.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 600 Ω resistor? (a) blue-black-brown (b) violet-blue-brown (c) blue-black-black (d) blue-black-red
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44000 Ω resistor? (a) yellow-green-orange (b) yellow-yellow-red (c) yellow-yellow-orange (d) yellow-yellow-yellow
  22. 22.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  27. 27.🌈 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
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 840 Ω resistor? (a) yellow-grey-brown (b) grey-yellow-red (c) grey-yellow-black (d) grey-yellow-brown
  29. 29.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands white, blue, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands yellow, yellow, red. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8200 Ω resistor? (a) grey-red-brown (b) red-grey-red (c) grey-red-red (d) grey-red-orange
  33. 33.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) grey-brown-brown (b) white-brown-black (c) brown-grey-black (d) grey-brown-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36000 Ω resistor? (a) orange-blue-red (b) orange-blue-orange (c) orange-blue-yellow (d) blue-orange-orange
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) violet-black-brown (b) grey-violet-black (c) grey-black-black (d) violet-black-black

Answer key

  1. 30
  2. 0
  3. 97
  4. 45
  5. 82000
  6. 27
  7. 20000
  8. 720
  9. 220
  10. 11
  11. blue-brown-orange
  12. orange-black-black
  13. 310
  14. 5 %
  15. 5
  16. orange-white-red
  17. 2
  18. 3
  19. 1.6
  20. blue-black-brown
  21. yellow-yellow-orange
  22. 88
  23. 890
  24. 910
  25. 96
  26. 700
  27. the one nearest an end
  28. grey-yellow-brown
  29. 640
  30. 960
  31. 4400
  32. grey-red-red
  33. 7100
  34. 8.4
  35. 94
  36. 670
  37. 41000
  38. grey-brown-black
  39. orange-blue-orange
  40. violet-black-black

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