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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 186 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  2. 2.🌈 A resistor has the colour bands green, violet, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does blue stand for?
  6. 6.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does red stand for?
  8. 8.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20000 Ω resistor? (a) red-black-red (b) orange-red-orange (c) red-black-yellow (d) red-black-orange
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 400 Ω resistor? (a) yellow-black-brown (b) yellow-black-black (c) green-yellow-brown (d) yellow-black-red
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-black-black (b) red-black-black (c) red-black-brown (d) orange-red-black
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79000 Ω resistor? (a) violet-white-yellow (b) violet-white-red (c) white-violet-orange (d) violet-white-orange
  13. 13.🌈 In the resistor colour code, which number does yellow stand for?
  14. 14.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) green-blue-black (b) violet-green-black (c) blue-green-black (d) blue-green-brown
  18. 18.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) red-violet-black (b) violet-red-brown (c) grey-red-black (d) violet-red-black
  21. 21.🌈 A resistor has the colour bands white, blue, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands blue, blue, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) yellow-red-orange (b) red-yellow-orange (c) yellow-red-yellow (d) yellow-red-red
  26. 26.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 470 Ω resistor? (a) yellow-violet-red (b) yellow-violet-brown (c) violet-yellow-brown (d) yellow-violet-black
  28. 28.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 In the resistor colour code, which number does green stand for?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) green-grey-black (b) white-green-black (c) grey-green-brown (d) grey-green-black
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93000 Ω resistor? (a) white-orange-red (b) white-orange-orange (c) white-orange-yellow (d) orange-white-orange
  32. 32.🌈 In the resistor colour code, which number does orange stand for?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 940 Ω resistor? (a) white-yellow-brown (b) yellow-white-brown (c) white-yellow-red (d) white-yellow-black
  34. 34.🌈 A resistor has the colour bands violet, blue, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) white-violet-black (b) grey-violet-brown (c) grey-violet-black (d) violet-grey-black
  36. 36.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  37. 37.🌈 In the resistor colour code, which number does brown stand for?
  38. 38.🌈 A resistor has the colour bands brown, blue, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands brown, violet, black. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-black (b) red-white-brown (c) red-white-red (d) white-red-brown

Answer key

  1. the one nearest an end
  2. 5.7
  3. 9200
  4. 92
  5. 6
  6. 6
  7. 2
  8. 4.1
  9. red-black-orange
  10. yellow-black-brown
  11. red-black-black
  12. violet-white-orange
  13. 4
  14. 51
  15. 7800
  16. 670
  17. blue-green-black
  18. 29
  19. 5 %
  20. violet-red-black
  21. 960
  22. 1.5
  23. 500
  24. 66
  25. yellow-red-orange
  26. 9.9
  27. yellow-violet-brown
  28. 82
  29. 5
  30. grey-green-black
  31. white-orange-orange
  32. 3
  33. white-yellow-brown
  34. 7.6
  35. grey-violet-black
  36. 77
  37. 1
  38. 160
  39. 17
  40. red-white-brown

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