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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 229 · 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.

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  1. 1.🌈 A resistor has the colour bands green, brown, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  3. 3.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) yellow-red-black (b) green-red-black (c) red-yellow-black (d) yellow-red-brown
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) brown-blue-black (b) brown-blue-brown (c) blue-brown-black (d) red-blue-black
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) blue-black-brown (b) blue-black-orange (c) blue-black-red (d) violet-blue-red
  7. 7.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  8. 8.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 640 Ω resistor? (a) yellow-blue-brown (b) blue-yellow-black (c) blue-yellow-red (d) blue-yellow-brown
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 590 Ω resistor? (a) white-green-brown (b) green-white-black (c) green-white-red (d) green-white-brown
  11. 11.🌈 In the resistor colour code, which number does brown stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9200 Ω resistor? (a) red-white-red (b) white-red-red (c) white-red-orange (d) white-red-brown
  13. 13.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) red-black-red (b) red-black-brown (c) orange-red-red (d) red-black-orange
  19. 19.🌈 In the resistor colour code, which number does black stand for?
  20. 20.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands yellow, violet, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) white-orange-black (b) orange-white-black (c) brown-orange-black (d) white-orange-brown
  23. 23.🌈 In the resistor colour code, which number does green stand for?
  24. 24.🌈 A resistor has the colour bands yellow, green, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6100 Ω resistor? (a) blue-brown-brown (b) blue-brown-orange (c) blue-brown-red (d) brown-blue-red
  29. 29.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands green, grey, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32000 Ω resistor? (a) red-orange-orange (b) orange-red-orange (c) orange-red-yellow (d) orange-red-red
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) violet-grey-black (b) white-violet-black (c) grey-violet-brown (d) grey-violet-black
  33. 33.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does red stand for?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) violet-red-brown (b) grey-red-black (c) violet-red-black (d) red-violet-black
  36. 36.🌈 In the resistor colour code, which number does orange stand for?
  37. 37.🌈 In the resistor colour code, which number does yellow stand for?
  38. 38.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands blue, red, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?

Answer key

  1. 5.1
  2. 5 %
  3. 91
  4. yellow-red-black
  5. brown-blue-black
  6. blue-black-red
  7. the one nearest an end
  8. 4.4
  9. blue-yellow-brown
  10. green-white-brown
  11. 1
  12. white-red-red
  13. 4.8
  14. 61
  15. 660
  16. 29
  17. 3.1
  18. red-black-red
  19. 0
  20. 6200
  21. 4.7
  22. white-orange-black
  23. 5
  24. 4.5
  25. 240
  26. 120
  27. 350
  28. blue-brown-red
  29. 4
  30. 58
  31. orange-red-orange
  32. grey-violet-black
  33. 170
  34. 2
  35. violet-red-black
  36. 3
  37. 4
  38. 890
  39. 6.2
  40. 68

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