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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 364 · 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.🌈 In the resistor colour code, which number does black stand for?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) red-yellow-orange (b) yellow-red-orange (c) yellow-red-red (d) yellow-red-yellow
  3. 3.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does red stand for?
  5. 5.🌈 A resistor has the colour bands orange, violet, orange. What is its value (in ohms)?
  6. 6.🌈 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
  7. 7.🌈 In the resistor colour code, which number does green stand for?
  8. 8.🌈 In the resistor colour code, which number does violet stand for?
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  10. 10.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands green, red, red. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does yellow stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) red-black-red (b) red-black-black (c) orange-red-brown (d) red-black-brown
  14. 14.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands yellow, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does brown stand for?
  18. 18.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) brown-grey-brown (b) grey-brown-red (c) brown-grey-red (d) brown-grey-orange
  20. 20.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7100 Ω resistor? (a) violet-brown-red (b) violet-brown-orange (c) brown-violet-red (d) violet-brown-brown
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) brown-yellow-black (b) white-yellow-black (c) yellow-white-black (d) white-yellow-brown
  23. 23.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands green, blue, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands violet, grey, brown. What is its value (in ohms)?
  28. 28.🌈 In the resistor colour code, which number does white stand for?
  29. 29.🌈 In the resistor colour code, which number does blue stand for?
  30. 30.🌈 A resistor has the colour bands orange, red, brown. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2000 Ω resistor? (a) orange-red-red (b) red-black-brown (c) red-black-orange (d) red-black-red
  32. 32.🌈 A resistor has the colour bands white, blue, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-red (b) violet-red-brown (c) red-violet-brown (d) red-violet-black
  34. 34.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands white, orange, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) grey-black-orange (b) grey-black-red (c) white-grey-orange (d) grey-black-yellow
  38. 38.🌈 A resistor has the colour bands green, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 350 Ω resistor? (a) green-orange-brown (b) orange-green-brown (c) orange-green-black (d) orange-green-red
  40. 40.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?

Answer key

  1. 0
  2. yellow-red-orange
  3. 280
  4. 2
  5. 37000
  6. the one nearest an end
  7. 5
  8. 7
  9. 5 %
  10. 33
  11. 5200
  12. 4
  13. red-black-brown
  14. 600
  15. 480
  16. 3.3
  17. 1
  18. 8.9
  19. brown-grey-red
  20. 230
  21. violet-brown-red
  22. white-yellow-black
  23. 92
  24. 560
  25. 53
  26. 2.4
  27. 780
  28. 9
  29. 6
  30. 320
  31. red-black-red
  32. 96
  33. red-violet-brown
  34. 71000
  35. 93
  36. 1.2
  37. grey-black-orange
  38. 54
  39. orange-green-brown
  40. 120

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