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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 944 · 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.🌈 In the resistor colour code, which number does grey stand for?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  4. 4.🌈 A resistor has the colour bands violet, green, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69000 Ω resistor? (a) blue-white-red (b) white-blue-orange (c) blue-white-orange (d) blue-white-yellow
  8. 8.🌈 In the resistor colour code, which number does yellow stand for?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) red-violet-red (b) violet-red-brown (c) violet-red-red (d) violet-red-orange
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) green-black-orange (b) green-black-yellow (c) green-black-red (d) blue-green-orange
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 630 Ω resistor? (a) blue-orange-brown (b) orange-blue-brown (c) blue-orange-red (d) blue-orange-black
  12. 12.🌈 A resistor has the colour bands white, black, orange. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) brown-blue-black (b) brown-blue-brown (c) red-blue-black (d) blue-brown-black
  14. 14.🌈 In the resistor colour code, which number does orange stand for?
  15. 15.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) blue-black-red (b) violet-blue-red (c) blue-black-brown (d) blue-black-orange
  17. 17.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands white, red, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) yellow-orange-red (b) orange-yellow-red (c) orange-yellow-brown (d) orange-yellow-orange
  21. 21.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does black stand for?
  23. 23.🌈 A resistor has the colour bands green, grey, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands white, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) red-violet-orange (b) red-violet-red (c) red-violet-yellow (d) violet-red-orange
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47000 Ω resistor? (a) yellow-violet-orange (b) yellow-violet-yellow (c) yellow-violet-red (d) violet-yellow-orange
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5400 Ω resistor? (a) green-yellow-red (b) yellow-green-red (c) green-yellow-brown (d) green-yellow-orange
  28. 28.🌈 A resistor has the colour bands red, brown, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 78 Ω resistor? (a) violet-grey-brown (b) grey-violet-black (c) grey-grey-black (d) violet-grey-black
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-brown-black (b) brown-brown-red (c) brown-red-brown (d) brown-brown-brown
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) violet-brown-brown (b) brown-violet-black (c) brown-violet-brown (d) brown-violet-red
  34. 34.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands yellow, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands violet, white, red. 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 orange, brown, red. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3900 Ω resistor? (a) orange-white-orange (b) orange-white-brown (c) white-orange-red (d) orange-white-red
  40. 40.🌈 In the resistor colour code, which number does white stand for?

Answer key

  1. the one nearest an end
  2. 8
  3. 5 %
  4. 750
  5. 41
  6. 99000
  7. blue-white-orange
  8. 4
  9. violet-red-red
  10. green-black-orange
  11. blue-orange-brown
  12. 90000
  13. brown-blue-black
  14. 3
  15. 1.1
  16. blue-black-red
  17. 180
  18. 92000
  19. 21
  20. orange-yellow-red
  21. 9.6
  22. 0
  23. 58000
  24. 94
  25. red-violet-orange
  26. yellow-violet-orange
  27. green-yellow-red
  28. 21
  29. 4200
  30. 170
  31. violet-grey-black
  32. brown-brown-brown
  33. brown-violet-brown
  34. 2.4
  35. 480
  36. 7900
  37. 1
  38. 3100
  39. orange-white-red
  40. 9

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