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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 766 · 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.

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  1. 1.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) violet-red-brown (b) violet-red-orange (c) red-violet-red (d) violet-red-red
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) brown-violet-red (b) brown-violet-black (c) brown-violet-brown (d) violet-brown-brown
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) red-green-black (b) green-red-black (c) green-red-brown (d) blue-red-black
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9800 Ω resistor? (a) white-grey-orange (b) grey-white-red (c) white-grey-red (d) white-grey-brown
  6. 6.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) grey-red-brown (b) red-grey-red (c) red-grey-brown (d) red-grey-black
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-red (b) red-orange-black (c) red-orange-brown (d) orange-red-brown
  10. 10.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  12. 12.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does green stand for?
  14. 14.🌈 A resistor has the colour bands green, black, orange. What is its value (in ohms)?
  15. 15.🌈 In the resistor colour code, which number does brown stand for?
  16. 16.🌈 A resistor has the colour bands yellow, red, red. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2200 Ω resistor? (a) red-red-orange (b) red-red-brown (c) red-orange-red (d) red-red-red
  18. 18.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands blue, violet, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, violet, brown. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands grey, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29 Ω resistor? (a) red-white-brown (b) white-red-black (c) red-white-black (d) orange-white-black
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 58 Ω resistor? (a) blue-grey-black (b) green-grey-brown (c) green-grey-black (d) grey-green-black
  24. 24.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands violet, orange, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 In the resistor colour code, which number does red stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1600 Ω resistor? (a) brown-blue-brown (b) blue-brown-red (c) brown-blue-orange (d) brown-blue-red
  35. 35.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 In the resistor colour code, which number does grey stand for?
  40. 40.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?

Answer key

  1. 28
  2. violet-red-red
  3. brown-violet-brown
  4. green-red-black
  5. white-grey-red
  6. 600
  7. the one nearest an end
  8. red-grey-brown
  9. red-orange-brown
  10. 51
  11. 5 %
  12. 520
  13. 5
  14. 50000
  15. 1
  16. 4200
  17. red-red-red
  18. 9
  19. 6700
  20. 270
  21. 860
  22. red-white-black
  23. green-grey-black
  24. 4.8
  25. 730
  26. 1.5
  27. 9100
  28. 770
  29. 6900
  30. 1.4
  31. 690
  32. 670
  33. 2
  34. brown-blue-red
  35. 730
  36. 220
  37. 71000
  38. 5
  39. 8
  40. 1000

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