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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 369 · 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, grey, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) white-yellow-black (b) grey-yellow-black (c) grey-yellow-brown (d) yellow-grey-black
  4. 4.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70 Ω resistor? (a) grey-violet-black (b) grey-black-black (c) violet-black-brown (d) violet-black-black
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  7. 7.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands yellow, black, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does grey stand for?
  13. 13.🌈 In the resistor colour code, which number does yellow stand for?
  14. 14.🌈 A resistor has the colour bands white, green, brown. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) green-red-orange (b) red-green-yellow (c) red-green-orange (d) red-green-red
  16. 16.🌈 In the resistor colour code, which number does blue stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) red-orange-yellow (b) orange-red-orange (c) red-orange-red (d) red-orange-orange
  18. 18.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 320 Ω resistor? (a) orange-red-red (b) red-orange-brown (c) orange-red-brown (d) orange-red-black
  20. 20.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  22. 22.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
  23. 23.🌈 In the resistor colour code, which number does black stand for?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11 Ω resistor? (a) red-brown-black (b) brown-brown-brown (c) brown-red-black (d) brown-brown-black
  25. 25.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53000 Ω resistor? (a) green-orange-orange (b) orange-green-orange (c) green-orange-yellow (d) green-orange-red
  28. 28.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 97000 Ω resistor? (a) white-violet-yellow (b) white-violet-red (c) violet-white-orange (d) white-violet-orange
  30. 30.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands violet, green, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands yellow, violet, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) red-green-orange (b) red-green-brown (c) red-green-red (d) green-red-red
  37. 37.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?
  38. 38.🌈 In the resistor colour code, which number does brown stand for?
  39. 39.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands orange, black, brown. What is its value (in ohms)?

Answer key

  1. 5.8
  2. 4800
  3. grey-yellow-black
  4. 51
  5. violet-black-black
  6. 5 %
  7. 20
  8. 82000
  9. 400
  10. 3.2
  11. 9.6
  12. 8
  13. 4
  14. 950
  15. red-green-orange
  16. 6
  17. red-orange-orange
  18. 47
  19. orange-red-brown
  20. 7500
  21. 41
  22. the one nearest an end
  23. 0
  24. brown-brown-black
  25. 38
  26. 18000
  27. green-orange-orange
  28. 64
  29. white-violet-orange
  30. 99000
  31. 750
  32. 47
  33. 3.9
  34. 29
  35. 1000
  36. red-green-red
  37. 86
  38. 1
  39. 2.5
  40. 300

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