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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 986 · 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 brown stand for?
  2. 2.🌈 In the resistor colour code, which number does red stand for?
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8900 Ω resistor? (a) grey-white-red (b) grey-white-brown (c) grey-white-orange (d) white-grey-red
  5. 5.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 97 Ω resistor? (a) violet-white-black (b) white-violet-brown (c) white-violet-black (d) brown-violet-black
  7. 7.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  9. 9.🌈 In the resistor colour code, which number does blue stand for?
  10. 10.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32 Ω resistor? (a) orange-red-black (b) red-orange-black (c) orange-red-brown (d) yellow-red-black
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1600 Ω resistor? (a) brown-blue-red (b) brown-blue-orange (c) blue-brown-red (d) brown-blue-brown
  13. 13.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) red-black-black (b) orange-red-black (c) red-black-brown (d) orange-black-black
  15. 15.🌈 In the resistor colour code, which number does violet stand for?
  16. 16.🌈 In the resistor colour code, which number does grey stand for?
  17. 17.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-red-brown (b) orange-red-black (c) red-red-black (d) red-orange-black
  19. 19.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1900 Ω resistor? (a) brown-white-orange (b) white-brown-red (c) brown-white-brown (d) brown-white-red
  21. 21.🌈 A resistor has the colour bands red, black, red. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 60000 Ω resistor? (a) blue-black-yellow (b) blue-black-red (c) blue-black-orange (d) violet-blue-orange
  25. 25.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81 Ω resistor? (a) grey-brown-brown (b) grey-brown-black (c) brown-grey-black (d) white-brown-black
  28. 28.🌈 In the resistor colour code, which number does white stand for?
  29. 29.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands blue, violet, brown. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 440 Ω resistor? (a) yellow-yellow-brown (b) yellow-yellow-red (c) yellow-yellow-black (d) yellow-green-brown
  32. 32.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands orange, black, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands white, grey, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5300 Ω resistor? (a) orange-green-red (b) green-orange-brown (c) green-orange-orange (d) green-orange-red
  38. 38.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 In the resistor colour code, which number does black stand for?

Answer key

  1. 1
  2. 2
  3. 5 %
  4. grey-white-red
  5. 120
  6. white-violet-black
  7. 5100
  8. 720
  9. 6
  10. the one nearest an end
  11. orange-red-black
  12. brown-blue-red
  13. 6100
  14. red-black-black
  15. 7
  16. 8
  17. 6.9
  18. red-red-black
  19. 25000
  20. brown-white-red
  21. 2000
  22. 60
  23. 2400
  24. blue-black-orange
  25. 2
  26. 74
  27. grey-brown-black
  28. 9
  29. 8400
  30. 670
  31. yellow-yellow-brown
  32. 66
  33. 50000
  34. 30
  35. 98
  36. 3.9
  37. green-orange-red
  38. 350
  39. 7.2
  40. 0

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