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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 973 · 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 resistor has the colour bands violet, blue, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands violet, grey, red. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does brown stand for?
  4. 4.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) red-grey-red (b) grey-red-orange (c) red-grey-yellow (d) red-grey-orange
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8900 Ω resistor? (a) grey-white-red (b) grey-white-brown (c) white-grey-red (d) grey-white-orange
  7. 7.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands yellow, blue, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does red stand for?
  15. 15.🌈 A resistor has the colour bands white, grey, black. What is its value (in ohms)?
  16. 16.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-black-red (b) white-white-red (c) white-white-brown (d) white-white-orange
  18. 18.🌈 A resistor has the colour bands white, blue, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does green stand for?
  21. 21.🌈 A resistor has the colour bands white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does grey stand for?
  23. 23.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands white, violet, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-red (b) red-grey-black (c) red-grey-brown (d) grey-red-brown
  27. 27.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the gold band (c) the widest gap (d) any band
  28. 28.🌈 A resistor has the colour bands orange, red, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands orange, yellow, black. What is its value (in ohms)?
  30. 30.🌈 In the resistor colour code, which number does violet stand for?
  31. 31.🌈 A resistor has the colour bands white, green, black. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) red-grey-brown (b) orange-grey-black (c) grey-red-black (d) red-grey-black
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 830 Ω resistor? (a) orange-grey-brown (b) grey-orange-brown (c) grey-orange-red (d) grey-orange-black
  34. 34.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8200 Ω resistor? (a) grey-red-brown (b) grey-red-red (c) red-grey-red (d) grey-red-orange
  36. 36.🌈 In the resistor colour code, which number does yellow stand for?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29000 Ω resistor? (a) white-red-orange (b) red-white-yellow (c) red-white-orange (d) red-white-red
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) red-black-brown (b) red-black-red (c) orange-red-brown (d) red-black-black
  39. 39.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 480 Ω resistor? (a) yellow-grey-red (b) grey-yellow-brown (c) yellow-grey-black (d) yellow-grey-brown

Answer key

  1. 76000
  2. 7800
  3. 1
  4. 21000
  5. red-grey-orange
  6. grey-white-red
  7. 66
  8. 81
  9. 3.7
  10. 9.1
  11. 920
  12. 620
  13. 46
  14. 2
  15. 98
  16. 5 %
  17. white-white-red
  18. 9600
  19. 88000
  20. 5
  21. 970
  22. 8
  23. 79
  24. 76
  25. 9.7
  26. red-grey-brown
  27. the one nearest an end
  28. 320
  29. 34
  30. 7
  31. 95
  32. red-grey-black
  33. grey-orange-brown
  34. 15
  35. grey-red-red
  36. 4
  37. red-white-orange
  38. red-black-brown
  39. 12000
  40. yellow-grey-brown

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