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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 981 · 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 gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  2. 2.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands grey, brown, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) green-grey-brown (b) grey-green-black (c) green-grey-black (d) blue-grey-black
  7. 7.🌈 In the resistor colour code, which number does yellow stand for?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) green-brown-black (b) brown-yellow-black (c) yellow-brown-brown (d) yellow-brown-black
  9. 9.🌈 In the resistor colour code, which number does grey stand for?
  10. 10.🌈 In the resistor colour code, which number does red stand for?
  11. 11.🌈 A resistor has the colour bands brown, black, brown. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands blue, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does black stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 990 Ω resistor? (a) white-black-brown (b) white-white-red (c) white-white-black (d) white-white-brown
  17. 17.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) green-black-brown (b) blue-black-black (c) blue-green-black (d) green-black-black
  20. 20.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the gold band (d) the one nearest an end
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9100 Ω resistor? (a) white-brown-orange (b) white-brown-red (c) white-brown-brown (d) brown-white-red
  22. 22.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 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
  24. 24.🌈 A resistor has the colour bands white, green, orange. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does blue stand for?
  26. 26.🌈 A resistor has the colour bands yellow, blue, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands white, white, orange. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-red (b) grey-red-brown (c) red-grey-brown (d) red-grey-black
  29. 29.🌈 In the resistor colour code, which number does violet stand for?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) red-green-black (b) blue-red-black (c) green-red-brown (d) green-red-black
  31. 31.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22000 Ω resistor? (a) red-red-red (b) red-red-orange (c) red-orange-orange (d) red-red-yellow
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8800 Ω resistor? (a) grey-grey-orange (b) grey-grey-brown (c) grey-grey-red (d) grey-white-red
  36. 36.🌈 In the resistor colour code, which number does green stand for?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15 Ω resistor? (a) red-green-black (b) brown-green-black (c) brown-green-brown (d) green-brown-black
  38. 38.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?

Answer key

  1. 5 %
  2. 76
  3. 3700
  4. 810
  5. 41000
  6. green-grey-black
  7. 4
  8. yellow-brown-black
  9. 8
  10. 2
  11. 100
  12. 640
  13. 800
  14. 970
  15. 0
  16. white-white-brown
  17. 43
  18. 28000
  19. green-black-black
  20. the one nearest an end
  21. white-brown-red
  22. 620
  23. brown-brown-brown
  24. 95
  25. 6
  26. 460
  27. 99000
  28. red-grey-brown
  29. 7
  30. green-red-black
  31. 33
  32. 38
  33. 24
  34. red-red-orange
  35. grey-grey-red
  36. 5
  37. brown-green-black
  38. 580
  39. 600
  40. 86

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