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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 616 · 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 white, green, orange. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-brown (b) red-orange-red (c) red-red-orange (d) red-red-red
  3. 3.🌈 In the resistor colour code, which number does green stand for?
  4. 4.🌈 A resistor has the colour bands white, white, black. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does brown stand for?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  7. 7.🌈 A resistor has the colour bands blue, grey, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 In the resistor colour code, which number does blue stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7600 Ω resistor? (a) violet-blue-orange (b) blue-violet-red (c) violet-blue-red (d) violet-blue-brown
  10. 10.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands white, orange, red. What is its value (in ohms)?
  12. 12.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) any band (d) the gold band
  13. 13.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 560 Ω resistor? (a) blue-green-brown (b) green-blue-black (c) green-blue-red (d) green-blue-brown
  15. 15.🌈 In the resistor colour code, which number does red stand for?
  16. 16.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does violet stand for?
  18. 18.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 650 Ω resistor? (a) blue-green-red (b) blue-green-brown (c) blue-green-black (d) green-blue-brown
  21. 21.🌈 A resistor has the colour bands violet, violet, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 740 Ω resistor? (a) yellow-violet-brown (b) violet-yellow-brown (c) violet-yellow-red (d) violet-yellow-black
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3200 Ω resistor? (a) orange-red-orange (b) orange-red-red (c) red-orange-red (d) orange-red-brown
  25. 25.🌈 In the resistor colour code, which number does orange stand for?
  26. 26.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands orange, grey, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75000 Ω resistor? (a) violet-green-yellow (b) violet-green-red (c) violet-green-orange (d) green-violet-orange
  32. 32.🌈 In the resistor colour code, which number does yellow stand for?
  33. 33.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-red (b) red-orange-black (c) red-orange-brown (d) orange-red-brown
  35. 35.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands white, green, black. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39 Ω resistor? (a) white-orange-black (b) orange-white-brown (c) yellow-white-black (d) orange-white-black
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) brown-orange-black (b) orange-brown-brown (c) orange-brown-black (d) yellow-brown-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) red-brown-yellow (b) red-brown-orange (c) red-brown-red (d) brown-red-orange
  40. 40.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?

Answer key

  1. 95000
  2. red-red-red
  3. 5
  4. 99
  5. 1
  6. 5 %
  7. 68
  8. 6
  9. violet-blue-red
  10. 1.5
  11. 9300
  12. the one nearest an end
  13. 380
  14. green-blue-brown
  15. 2
  16. 360
  17. 7
  18. 110
  19. 430
  20. blue-green-brown
  21. 77000
  22. 88000
  23. violet-yellow-brown
  24. orange-red-red
  25. 3
  26. 7.7
  27. 67
  28. 38000
  29. 15000
  30. 7.2
  31. violet-green-orange
  32. 4
  33. 3.2
  34. red-orange-brown
  35. 8.2
  36. 95
  37. orange-white-black
  38. orange-brown-black
  39. red-brown-orange
  40. 40

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