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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 538 · 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 grey, green, red. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands white, grey, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands red, brown, brown. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8200 Ω resistor? (a) grey-red-orange (b) grey-red-brown (c) grey-red-red (d) red-grey-red
  8. 8.🌈 In the resistor colour code, which number does black stand for?
  9. 9.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
  10. 10.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  11. 11.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does white stand for?
  13. 13.🌈 A resistor has the colour bands orange, green, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66000 Ω resistor? (a) blue-blue-yellow (b) blue-blue-red (c) blue-blue-orange (d) blue-violet-orange
  16. 16.🌈 In the resistor colour code, which number does red stand for?
  17. 17.🌈 A resistor has the colour bands blue, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  19. 19.🌈 In the resistor colour code, which number does green stand for?
  20. 20.🌈 In the resistor colour code, which number does yellow stand for?
  21. 21.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37000 Ω resistor? (a) orange-violet-red (b) violet-orange-orange (c) orange-violet-orange (d) orange-violet-yellow
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-red (b) grey-violet-black (c) grey-violet-brown (d) violet-grey-brown
  25. 25.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands yellow, orange, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43000 Ω resistor? (a) yellow-orange-orange (b) orange-yellow-orange (c) yellow-orange-red (d) yellow-orange-yellow
  30. 30.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 In the resistor colour code, which number does brown stand for?
  33. 33.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands grey, green, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9300 Ω resistor? (a) white-orange-brown (b) white-orange-orange (c) orange-white-red (d) white-orange-red
  38. 38.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) white-orange-brown (b) orange-white-brown (c) white-orange-black (d) white-orange-red
  40. 40.🌈 In the resistor colour code, which number does blue stand for?

Answer key

  1. 8500
  2. 98
  3. 4.2
  4. 7.1
  5. 660
  6. 210
  7. grey-red-red
  8. 0
  9. 8800
  10. the one nearest an end
  11. 870
  12. 9
  13. 350
  14. 8
  15. blue-blue-orange
  16. 2
  17. 670
  18. 64
  19. 5
  20. 4
  21. 720
  22. 5 %
  23. orange-violet-orange
  24. grey-violet-brown
  25. 8.7
  26. 8.3
  27. 25
  28. 43
  29. yellow-orange-orange
  30. 89
  31. 5.9
  32. 1
  33. 840
  34. 850
  35. 160
  36. 60
  37. white-orange-red
  38. 500
  39. white-orange-brown
  40. 6

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