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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 765 · 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.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51000 Ω resistor? (a) green-brown-orange (b) brown-green-orange (c) green-brown-red (d) green-brown-yellow
  3. 3.🌈 In the resistor colour code, which number does white stand for?
  4. 4.🌈 A resistor has the colour bands white, yellow, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) white-grey-brown (b) white-grey-red (c) grey-white-brown (d) white-grey-black
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4300 Ω resistor? (a) orange-yellow-red (b) yellow-orange-brown (c) yellow-orange-orange (d) yellow-orange-red
  8. 8.🌈 In the resistor colour code, which number does brown stand for?
  9. 9.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the widest gap (d) the one nearest an end
  10. 10.🌈 In the resistor colour code, which number does green stand for?
  11. 11.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands violet, yellow, red. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands blue, green, red. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 140 Ω resistor? (a) yellow-brown-brown (b) brown-yellow-red (c) brown-yellow-brown (d) brown-yellow-black
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) violet-orange-black (b) orange-violet-brown (c) orange-violet-black (d) yellow-violet-black
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) red-black-red (b) orange-red-brown (c) red-black-brown (d) red-black-black
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) orange-yellow-black (b) orange-yellow-brown (c) yellow-yellow-black (d) yellow-orange-black
  20. 20.🌈 A resistor has the colour bands blue, grey, brown. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does red stand for?
  22. 22.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2600 Ω resistor? (a) red-blue-brown (b) red-blue-red (c) blue-red-red (d) red-blue-orange
  24. 24.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6800 Ω resistor? (a) grey-blue-red (b) blue-grey-brown (c) blue-grey-orange (d) blue-grey-red
  26. 26.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands brown, orange, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  29. 29.🌈 In the resistor colour code, which number does blue stand for?
  30. 30.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does orange stand for?
  34. 34.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 In the resistor colour code, which number does black stand for?
  36. 36.🌈 A resistor has the colour bands green, blue, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands yellow, green, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79000 Ω resistor? (a) white-violet-orange (b) violet-white-yellow (c) violet-white-red (d) violet-white-orange
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56000 Ω resistor? (a) green-blue-yellow (b) green-blue-orange (c) blue-green-orange (d) green-blue-red
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) red-green-red (b) green-red-orange (c) red-green-orange (d) red-green-yellow

Answer key

  1. 56
  2. green-brown-orange
  3. 9
  4. 9.4
  5. 5 %
  6. white-grey-brown
  7. yellow-orange-red
  8. 1
  9. the one nearest an end
  10. 5
  11. 60000
  12. 7400
  13. 2200
  14. 18
  15. 6500
  16. brown-yellow-brown
  17. orange-violet-black
  18. red-black-brown
  19. orange-yellow-black
  20. 680
  21. 2
  22. 1.6
  23. red-blue-red
  24. 8800
  25. blue-grey-red
  26. 370
  27. 1.3
  28. 64
  29. 6
  30. 12
  31. 16
  32. 40
  33. 3
  34. 9
  35. 0
  36. 56000
  37. 4.5
  38. violet-white-orange
  39. green-blue-orange
  40. red-green-orange

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