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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 830 · 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) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  2. 2.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 50 % (d) 0 %
  6. 6.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 In the resistor colour code, which number does violet stand for?
  8. 8.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands violet, black, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-black (b) white-black-red (c) white-black-brown (d) brown-white-brown
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 740 Ω resistor? (a) yellow-violet-brown (b) violet-yellow-black (c) violet-yellow-brown (d) violet-yellow-red
  12. 12.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does white stand for?
  15. 15.🌈 In the resistor colour code, which number does yellow stand for?
  16. 16.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 In the resistor colour code, which number does red stand for?
  19. 19.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does blue stand for?
  23. 23.🌈 In the resistor colour code, which number does grey stand for?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) green-brown-black (b) blue-brown-black (c) green-brown-brown (d) brown-green-black
  25. 25.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  26. 26.🌈 In the resistor colour code, which number does black stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33000 Ω resistor? (a) orange-yellow-orange (b) orange-orange-yellow (c) orange-orange-orange (d) orange-orange-red
  28. 28.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands blue, black, black. What is its value (in ohms)?
  30. 30.🌈 In the resistor colour code, which number does green stand for?
  31. 31.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) orange-violet-orange (b) orange-violet-yellow (c) violet-orange-orange (d) orange-violet-red
  36. 36.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  37. 37.🌈 In the resistor colour code, which number does brown stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) white-orange-black (b) white-orange-red (c) white-orange-brown (d) orange-white-brown
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88000 Ω resistor? (a) grey-white-orange (b) grey-grey-red (c) grey-grey-yellow (d) grey-grey-orange
  40. 40.🌈 A resistor has the colour bands red, white, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. the one nearest an end
  2. 32
  3. 30000
  4. 8400
  5. 5 %
  6. 12
  7. 7
  8. 3.8
  9. 700
  10. white-black-brown
  11. violet-yellow-brown
  12. 280
  13. 33
  14. 9
  15. 4
  16. 11
  17. 3.5
  18. 2
  19. 9000
  20. 2.5
  21. 27
  22. 6
  23. 8
  24. green-brown-black
  25. 10
  26. 0
  27. orange-orange-orange
  28. 90
  29. 60
  30. 5
  31. 430
  32. 80000
  33. 8.2
  34. 9900
  35. orange-violet-orange
  36. 81
  37. 1
  38. white-orange-brown
  39. grey-grey-orange
  40. 2.9

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