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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 53 · 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 green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands green, brown, red. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does red stand for?
  5. 5.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does orange stand for?
  8. 8.🌈 In the resistor colour code, which number does blue stand for?
  9. 9.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55000 Ω resistor? (a) green-blue-orange (b) green-green-orange (c) green-green-yellow (d) green-green-red
  11. 11.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) blue-brown-orange (b) blue-brown-yellow (c) brown-blue-orange (d) blue-brown-red
  14. 14.🌈 In the resistor colour code, which number does grey stand for?
  15. 15.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  16. 16.🌈 In the resistor colour code, which number does brown stand for?
  17. 17.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 In the resistor colour code, which number does violet stand for?
  20. 20.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-orange-brown (b) orange-orange-red (c) orange-orange-orange (d) orange-yellow-red
  23. 23.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands yellow, orange, black. What is its value (in ohms)?
  25. 25.🌈 In the resistor colour code, which number does yellow stand for?
  26. 26.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands grey, green, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands orange, yellow, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2700 Ω resistor? (a) red-violet-orange (b) violet-red-red (c) red-violet-red (d) red-violet-brown
  35. 35.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 810 Ω resistor? (a) grey-brown-black (b) grey-brown-red (c) brown-grey-brown (d) grey-brown-brown
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72000 Ω resistor? (a) red-violet-orange (b) violet-red-red (c) violet-red-orange (d) violet-red-yellow
  38. 38.🌈 A resistor has the colour bands blue, red, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands green, green, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands red, green, brown. What is its value (in ohms)?

Answer key

  1. 5.4
  2. 9000
  3. 5100
  4. 2
  5. 98000
  6. 890
  7. 3
  8. 6
  9. the one nearest an end
  10. green-green-orange
  11. 2.3
  12. 5 %
  13. blue-brown-orange
  14. 8
  15. 21
  16. 1
  17. 62
  18. 82
  19. 7
  20. 620
  21. 9700
  22. orange-orange-red
  23. 180
  24. 43
  25. 4
  26. 8.4
  27. 2
  28. 990
  29. 850
  30. 610
  31. 3.4
  32. 24
  33. 76
  34. red-violet-red
  35. 32
  36. grey-brown-brown
  37. violet-red-orange
  38. 62
  39. 55
  40. 250

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