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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 323 · 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 violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  3. 3.🌈 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
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87000 Ω resistor? (a) grey-violet-yellow (b) grey-violet-orange (c) grey-violet-red (d) violet-grey-orange
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) orange-yellow-brown (b) orange-yellow-red (c) orange-yellow-orange (d) yellow-orange-red
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 25 % (d) 50 %
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2600 Ω resistor? (a) blue-red-red (b) red-blue-red (c) red-blue-orange (d) red-blue-brown
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) white-yellow-black (b) white-yellow-brown (c) yellow-white-black (d) brown-yellow-black
  9. 9.🌈 A resistor has the colour bands blue, green, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) violet-white-brown (b) white-violet-black (c) grey-white-black (d) violet-white-black
  14. 14.🌈 In the resistor colour code, which number does violet stand for?
  15. 15.🌈 A resistor has the colour bands orange, black, black. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does brown stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8700 Ω resistor? (a) grey-violet-red (b) grey-violet-brown (c) violet-grey-red (d) grey-violet-orange
  19. 19.🌈 In the resistor colour code, which number does red stand for?
  20. 20.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands red, violet, red. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  23. 23.🌈 In the resistor colour code, which number does yellow stand for?
  24. 24.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands red, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) grey-green-black (b) green-violet-black (c) violet-green-black (d) violet-green-brown
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) grey-blue-black (b) violet-blue-black (c) blue-violet-black (d) violet-blue-brown
  28. 28.🌈 A resistor has the colour bands grey, green, red. What is its value (in ohms)?
  29. 29.🌈 In the resistor colour code, which number does orange stand for?
  30. 30.🌈 A resistor has the colour bands blue, red, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands green, green, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66 Ω resistor? (a) blue-violet-black (b) blue-blue-black (c) violet-blue-black (d) blue-blue-brown
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) orange-red-black (b) red-orange-black (c) red-red-black (d) red-red-brown
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 460 Ω resistor? (a) blue-yellow-brown (b) yellow-blue-black (c) yellow-blue-red (d) yellow-blue-brown

Answer key

  1. 7.7
  2. 26
  3. the one nearest an end
  4. grey-violet-orange
  5. orange-yellow-red
  6. 5 %
  7. red-blue-red
  8. white-yellow-black
  9. 65
  10. 27
  11. 90
  12. 50
  13. violet-white-black
  14. 7
  15. 30
  16. 8.4
  17. 1
  18. grey-violet-red
  19. 2
  20. 56000
  21. 2700
  22. 140
  23. 4
  24. 16
  25. 260
  26. violet-green-black
  27. violet-blue-black
  28. 8500
  29. 3
  30. 62
  31. 3.5
  32. 320
  33. 8
  34. 780
  35. 55000
  36. 55
  37. 9.9
  38. blue-blue-black
  39. red-red-black
  40. yellow-blue-brown

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