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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 147 · 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 brown, white, brown. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70000 Ω resistor? (a) violet-black-orange (b) grey-violet-orange (c) violet-black-red (d) violet-black-yellow
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 590 Ω resistor? (a) green-white-red (b) green-white-black (c) green-white-brown (d) white-green-brown
  6. 6.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?
  7. 7.🌈 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
  8. 8.🌈 In the resistor colour code, which number does white stand for?
  9. 9.🌈 A resistor has the colour bands violet, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7500 Ω resistor? (a) green-violet-red (b) violet-green-orange (c) violet-green-brown (d) violet-green-red
  15. 15.🌈 A resistor has the colour bands grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 600 Ω resistor? (a) violet-blue-brown (b) blue-black-black (c) blue-black-red (d) blue-black-brown
  17. 17.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
  18. 18.🌈 In the resistor colour code, which number does green stand for?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) red-blue-brown (b) blue-red-red (c) blue-red-brown (d) blue-red-black
  20. 20.🌈 A resistor has the colour bands red, grey, red. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does yellow stand for?
  22. 22.🌈 In the resistor colour code, which number does black stand for?
  23. 23.🌈 A resistor has the colour bands yellow, white, brown. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does brown stand for?
  25. 25.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands white, brown, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6500 Ω resistor? (a) blue-green-orange (b) green-blue-red (c) blue-green-brown (d) blue-green-red
  31. 31.🌈 In the resistor colour code, which number does violet stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 910 Ω resistor? (a) white-brown-brown (b) brown-white-brown (c) white-brown-black (d) white-brown-red
  33. 33.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands red, white, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands orange, green, brown. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 830 Ω resistor? (a) grey-orange-black (b) orange-grey-brown (c) grey-orange-red (d) grey-orange-brown
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 320 Ω resistor? (a) red-orange-brown (b) orange-red-brown (c) orange-red-black (d) orange-red-red
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95 Ω resistor? (a) brown-green-black (b) white-green-brown (c) white-green-black (d) green-white-black
  40. 40.🌈 In the resistor colour code, which number does blue stand for?

Answer key

  1. 190
  2. 2600
  3. violet-black-orange
  4. 5 %
  5. green-white-brown
  6. 87000
  7. the one nearest an end
  8. 9
  9. 760
  10. 81000
  11. 14
  12. 2.5
  13. 15
  14. violet-green-red
  15. 800
  16. blue-black-brown
  17. 80000
  18. 5
  19. blue-red-brown
  20. 2800
  21. 4
  22. 0
  23. 490
  24. 1
  25. 76
  26. 2.3
  27. 3.5
  28. 1500
  29. 91
  30. blue-green-red
  31. 7
  32. white-brown-brown
  33. 3300
  34. 2.9
  35. 13
  36. 350
  37. grey-orange-brown
  38. orange-red-brown
  39. white-green-black
  40. 6

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