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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 687 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) orange-violet-black (b) orange-violet-brown (c) yellow-violet-black (d) violet-orange-black
  2. 2.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands grey, violet, brown. What is its value (in ohms)?
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  6. 6.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does violet stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) white-grey-red (b) white-grey-brown (c) grey-white-brown (d) white-grey-black
  9. 9.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
  11. 11.🌈 A resistor has the colour bands green, green, orange. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands green, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does brown stand for?
  14. 14.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 590 Ω resistor? (a) white-green-brown (b) green-white-black (c) green-white-brown (d) green-white-red
  17. 17.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68000 Ω resistor? (a) grey-blue-orange (b) blue-grey-yellow (c) blue-grey-orange (d) blue-grey-red
  19. 19.🌈 In the resistor colour code, which number does orange stand for?
  20. 20.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 950 Ω resistor? (a) white-green-brown (b) white-green-black (c) white-green-red (d) green-white-brown
  23. 23.🌈 In the resistor colour code, which number does red stand for?
  24. 24.🌈 A resistor has the colour bands green, brown, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) yellow-orange-orange (b) orange-black-orange (c) orange-black-yellow (d) orange-black-red
  26. 26.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands orange, violet, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 830 Ω resistor? (a) grey-orange-red (b) grey-orange-brown (c) grey-orange-black (d) orange-grey-brown
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44000 Ω resistor? (a) yellow-yellow-red (b) yellow-yellow-orange (c) yellow-yellow-yellow (d) yellow-green-orange
  33. 33.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) red-grey-brown (b) red-grey-black (c) orange-grey-black (d) grey-red-black
  35. 35.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands blue, red, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, grey, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?

Answer key

  1. orange-violet-black
  2. 27
  3. 710
  4. 870
  5. 5 %
  6. 490
  7. 7
  8. white-grey-brown
  9. 6.7
  10. the one nearest an end
  11. 55000
  12. 530
  13. 1
  14. 27000
  15. 680
  16. green-white-brown
  17. 91
  18. blue-grey-orange
  19. 3
  20. 91000
  21. 29
  22. white-green-brown
  23. 2
  24. 5.1
  25. orange-black-orange
  26. 68
  27. 5700
  28. 37
  29. 38
  30. 4.6
  31. grey-orange-brown
  32. yellow-yellow-orange
  33. 11
  34. red-grey-black
  35. 32
  36. 47
  37. 6200
  38. 48
  39. 8100
  40. 32000

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