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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 940 · 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 colour bands (1st digit, 2nd digit, multiplier) mark a 59 Ω resistor? (a) green-white-brown (b) blue-white-black (c) green-white-black (d) white-green-black
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) red-brown-brown (b) red-brown-orange (c) red-brown-red (d) brown-red-red
  3. 3.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
  4. 4.🌈 In the resistor colour code, which number does blue stand for?
  5. 5.🌈 A resistor has the colour bands green, black, black. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) white-white-black (b) white-white-brown (c) brown-white-black (d) white-black-black
  7. 7.🌈 A resistor has the colour bands white, blue, brown. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  14. 14.🌈 In the resistor colour code, which number does yellow stand for?
  15. 15.🌈 A resistor has the colour bands violet, orange, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 24000 Ω resistor? (a) yellow-red-orange (b) red-yellow-yellow (c) red-yellow-orange (d) red-yellow-red
  17. 17.🌈 A resistor has the colour bands grey, black, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands green, white, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 680 Ω resistor? (a) grey-blue-brown (b) blue-grey-red (c) blue-grey-brown (d) blue-grey-black
  20. 20.🌈 In the resistor colour code, which number does red stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 74 Ω resistor? (a) yellow-violet-black (b) violet-yellow-brown (c) grey-yellow-black (d) violet-yellow-black
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33 Ω resistor? (a) orange-orange-brown (b) orange-orange-black (c) yellow-orange-black (d) orange-yellow-black
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) brown-green-yellow (b) brown-green-red (c) brown-green-orange (d) green-brown-orange
  24. 24.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) violet-orange-brown (b) violet-orange-black (c) orange-violet-black (d) grey-orange-black
  26. 26.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does green stand for?
  28. 28.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) yellow-red-brown (b) yellow-red-black (c) red-yellow-brown (d) yellow-red-red
  33. 33.🌈 A resistor has the colour bands orange, yellow, black. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does violet stand for?
  35. 35.🌈 A resistor has the colour bands violet, yellow, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43000 Ω resistor? (a) orange-yellow-orange (b) yellow-orange-yellow (c) yellow-orange-orange (d) yellow-orange-red
  39. 39.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does brown stand for?

Answer key

  1. green-white-black
  2. red-brown-red
  3. the one nearest an end
  4. 6
  5. 50
  6. white-white-black
  7. 960
  8. 89000
  9. 520
  10. 2.2
  11. 510
  12. 2.7
  13. 5 %
  14. 4
  15. 73
  16. red-yellow-orange
  17. 8000
  18. 590
  19. blue-grey-brown
  20. 2
  21. violet-yellow-black
  22. orange-orange-black
  23. brown-green-orange
  24. 6
  25. violet-orange-black
  26. 3.6
  27. 5
  28. 430
  29. 3.4
  30. 21
  31. 21
  32. yellow-red-brown
  33. 34
  34. 7
  35. 74000
  36. 16
  37. 72
  38. yellow-orange-orange
  39. 16
  40. 1

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