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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 456 · 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 grey, yellow, red. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36 Ω resistor? (a) blue-orange-black (b) orange-blue-brown (c) yellow-blue-black (d) orange-blue-black
  3. 3.🌈 In the resistor colour code, which number does orange stand for?
  4. 4.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) any band (d) the widest gap
  5. 5.🌈 In the resistor colour code, which number does grey stand for?
  6. 6.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands blue, white, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82000 Ω resistor? (a) grey-red-yellow (b) grey-red-red (c) grey-red-orange (d) red-grey-orange
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) red-grey-red (b) red-grey-yellow (c) grey-red-orange (d) red-grey-orange
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) red-green-orange (b) red-green-red (c) green-red-orange (d) red-green-yellow
  12. 12.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87000 Ω resistor? (a) violet-grey-orange (b) grey-violet-yellow (c) grey-violet-red (d) grey-violet-orange
  14. 14.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does yellow stand for?
  16. 16.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 In the resistor colour code, which number does violet stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) violet-grey-brown (b) grey-violet-black (c) grey-violet-brown (d) grey-violet-red
  22. 22.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  23. 23.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 300 Ω resistor? (a) orange-black-black (b) orange-black-brown (c) yellow-orange-brown (d) orange-black-red
  26. 26.🌈 In the resistor colour code, which number does red stand for?
  27. 27.🌈 In the resistor colour code, which number does brown stand for?
  28. 28.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57 Ω resistor? (a) green-violet-brown (b) violet-green-black (c) green-violet-black (d) blue-violet-black
  30. 30.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 590 Ω resistor? (a) green-white-red (b) green-white-brown (c) white-green-brown (d) green-white-black
  33. 33.🌈 A resistor has the colour bands yellow, yellow, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands red, grey, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 In the resistor colour code, which number does green stand for?
  38. 38.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 8400
  2. orange-blue-black
  3. 3
  4. the one nearest an end
  5. 8
  6. 690
  7. 69
  8. 27000
  9. grey-red-orange
  10. red-grey-orange
  11. red-green-orange
  12. 61000
  13. grey-violet-orange
  14. 22000
  15. 4
  16. 1.7
  17. 6100
  18. 21
  19. 230
  20. 7
  21. grey-violet-brown
  22. 5 %
  23. 11
  24. 2.7
  25. orange-black-brown
  26. 2
  27. 1
  28. 370
  29. green-violet-black
  30. 4
  31. 170
  32. green-white-brown
  33. 4.4
  34. 2.5
  35. 8200
  36. 28
  37. 5
  38. 7100
  39. 32
  40. 50

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