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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 884 · 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 blue stand for?
  2. 2.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 In the resistor colour code, which number does red stand for?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) blue-violet-black (b) violet-blue-brown (c) grey-blue-black (d) violet-blue-black
  5. 5.🌈 A resistor has the colour bands green, orange, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 5 % (d) 25 %
  8. 8.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
  10. 10.🌈 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
  11. 11.🌈 In the resistor colour code, which number does green stand for?
  12. 12.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands blue, orange, brown. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) orange-black-brown (b) yellow-black-black (c) orange-black-black (d) yellow-orange-black
  17. 17.🌈 A resistor has the colour bands orange, green, orange. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 550 Ω resistor? (a) green-green-black (b) green-green-brown (c) green-blue-brown (d) green-green-red
  19. 19.🌈 In the resistor colour code, which number does grey stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 590 Ω resistor? (a) green-white-black (b) green-white-brown (c) green-white-red (d) white-green-brown
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 11 Ω resistor? (a) brown-brown-brown (b) brown-red-black (c) brown-brown-black (d) red-brown-black
  22. 22.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 In the resistor colour code, which number does yellow stand for?
  24. 24.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21 Ω resistor? (a) brown-red-black (b) orange-brown-black (c) red-brown-black (d) red-brown-brown
  26. 26.🌈 A resistor has the colour bands green, blue, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6700 Ω resistor? (a) blue-violet-red (b) blue-violet-brown (c) blue-violet-orange (d) violet-blue-red
  29. 29.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42 Ω resistor? (a) yellow-red-brown (b) green-red-black (c) red-yellow-black (d) yellow-red-black
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-yellow-red (b) orange-orange-orange (c) orange-orange-red (d) orange-orange-brown
  34. 34.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) grey-black-yellow (b) grey-black-red (c) grey-black-orange (d) white-grey-orange
  37. 37.🌈 A resistor has the colour bands blue, blue, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands violet, red, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9500 Ω resistor? (a) white-green-orange (b) white-green-brown (c) white-green-red (d) green-white-red
  40. 40.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 6
  2. 3.2
  3. 2
  4. violet-blue-black
  5. 53
  6. 16
  7. 5 %
  8. 31
  9. 9700
  10. the one nearest an end
  11. 5
  12. 2900
  13. 5800
  14. 630
  15. 840
  16. orange-black-black
  17. 35000
  18. green-green-brown
  19. 8
  20. green-white-brown
  21. brown-brown-black
  22. 230
  23. 4
  24. 11
  25. red-brown-black
  26. 5.6
  27. 4.2
  28. blue-violet-red
  29. 970
  30. 3.5
  31. 9100
  32. yellow-red-black
  33. orange-orange-red
  34. 3.8
  35. 210
  36. grey-black-orange
  37. 66000
  38. 72
  39. white-green-red
  40. 15

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