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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 922 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 910 Ω resistor? (a) white-brown-red (b) white-brown-brown (c) brown-white-brown (d) white-brown-black
  3. 3.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) the gold band (d) any band
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 5 % (c) 25 % (d) 50 %
  5. 5.🌈 A resistor has the colour bands violet, violet, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1500 Ω resistor? (a) brown-green-red (b) brown-green-orange (c) brown-green-brown (d) green-brown-red
  9. 9.🌈 In the resistor colour code, which number does violet stand for?
  10. 10.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands orange, black, red. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3700 Ω resistor? (a) violet-orange-red (b) orange-violet-orange (c) orange-violet-red (d) orange-violet-brown
  14. 14.🌈 A resistor has the colour bands grey, red, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands white, white, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-brown-red (b) brown-brown-black (c) brown-red-brown (d) brown-brown-brown
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27000 Ω resistor? (a) violet-red-orange (b) red-violet-yellow (c) red-violet-red (d) red-violet-orange
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84000 Ω resistor? (a) yellow-grey-orange (b) grey-yellow-yellow (c) grey-yellow-red (d) grey-yellow-orange
  19. 19.🌈 A resistor has the colour bands violet, green, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5500 Ω resistor? (a) green-green-brown (b) green-blue-red (c) green-green-orange (d) green-green-red
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) yellow-black-black (b) orange-black-brown (c) orange-black-black (d) yellow-orange-black
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-orange-orange (b) orange-orange-brown (c) orange-orange-red (d) orange-yellow-red
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33000 Ω resistor? (a) orange-orange-yellow (b) orange-orange-red (c) orange-yellow-orange (d) orange-orange-orange
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85000 Ω resistor? (a) grey-green-orange (b) grey-green-red (c) green-grey-orange (d) grey-green-yellow
  26. 26.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does brown stand for?
  28. 28.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) orange-black-red (b) yellow-orange-red (c) orange-black-orange (d) orange-black-brown
  31. 31.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands red, violet, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29 Ω resistor? (a) red-white-brown (b) orange-white-black (c) red-white-black (d) white-red-black
  39. 39.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands violet, yellow, orange. What is its value (in ohms)?

Answer key

  1. 2
  2. white-brown-brown
  3. the one nearest an end
  4. 5 %
  5. 770
  6. 6900
  7. 10
  8. brown-green-red
  9. 7
  10. 5.8
  11. 7100
  12. 3000
  13. orange-violet-red
  14. 820
  15. 9.9
  16. brown-brown-brown
  17. red-violet-orange
  18. grey-yellow-orange
  19. 75
  20. 25000
  21. green-green-red
  22. orange-black-black
  23. orange-orange-red
  24. orange-orange-orange
  25. grey-green-orange
  26. 66
  27. 1
  28. 84
  29. 24
  30. orange-black-red
  31. 9900
  32. 270
  33. 9.8
  34. 84
  35. 7.1
  36. 28000
  37. 2.5
  38. red-white-black
  39. 26
  40. 74000

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