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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 822 · 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 red stand for?
  2. 2.🌈 In the resistor colour code, which number does blue stand for?
  3. 3.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) any band (d) the one nearest an end
  4. 4.🌈 In the resistor colour code, which number does grey stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89000 Ω resistor? (a) white-grey-orange (b) grey-white-red (c) grey-white-yellow (d) grey-white-orange
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) brown-red-orange (b) red-brown-red (c) red-brown-yellow (d) red-brown-orange
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) orange-black-red (b) orange-black-orange (c) yellow-orange-orange (d) orange-black-yellow
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35 Ω resistor? (a) orange-green-brown (b) yellow-green-black (c) green-orange-black (d) orange-green-black
  9. 9.🌈 A resistor has the colour bands grey, white, red. What is its value (in ohms)?
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 600 Ω resistor? (a) blue-black-black (b) blue-black-red (c) violet-blue-brown (d) blue-black-brown
  12. 12.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does brown stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) white-brown-brown (b) brown-white-brown (c) brown-white-red (d) brown-white-black
  15. 15.🌈 In the resistor colour code, which number does white stand for?
  16. 16.🌈 A resistor has the colour bands white, red, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands violet, grey, orange. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, orange, brown. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands white, yellow, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands green, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands white, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) brown-red-red (b) red-brown-red (c) brown-red-brown (d) brown-red-orange
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) violet-red-brown (b) red-violet-black (c) red-violet-brown (d) red-violet-red
  28. 28.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 32000 Ω resistor? (a) orange-red-red (b) red-orange-orange (c) orange-red-yellow (d) orange-red-orange
  33. 33.🌈 A resistor has the colour bands grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 780 Ω resistor? (a) grey-violet-brown (b) violet-grey-red (c) violet-grey-brown (d) violet-grey-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 650 Ω resistor? (a) green-blue-brown (b) blue-green-brown (c) blue-green-black (d) blue-green-red
  40. 40.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?

Answer key

  1. 2
  2. 6
  3. the one nearest an end
  4. 8
  5. grey-white-orange
  6. red-brown-orange
  7. orange-black-orange
  8. orange-green-black
  9. 8900
  10. 5 %
  11. blue-black-brown
  12. 3600
  13. 1
  14. brown-white-brown
  15. 9
  16. 920
  17. 78000
  18. 630
  19. 1.6
  20. 1.2
  21. 3900
  22. 9.4
  23. 98000
  24. 560
  25. 940
  26. brown-red-red
  27. red-violet-brown
  28. 610
  29. 240
  30. 29
  31. 51
  32. orange-red-orange
  33. 800
  34. 6100
  35. 41000
  36. 86
  37. 660
  38. violet-grey-brown
  39. blue-green-brown
  40. 20

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