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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 580 · 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.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  2. 2.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does violet stand for?
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) red-grey-red (b) red-grey-yellow (c) grey-red-orange (d) red-grey-orange
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3500 Ω resistor? (a) orange-green-orange (b) orange-green-red (c) orange-green-brown (d) green-orange-red
  8. 8.🌈 A resistor has the colour bands brown, red, brown. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands red, grey, red. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does white stand for?
  11. 11.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands violet, white, orange. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does orange stand for?
  16. 16.🌈 A resistor has the colour bands violet, green, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does brown stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6200 Ω resistor? (a) red-blue-red (b) blue-red-red (c) blue-red-orange (d) blue-red-brown
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6000 Ω resistor? (a) violet-blue-red (b) blue-black-orange (c) blue-black-red (d) blue-black-brown
  20. 20.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands grey, blue, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does green stand for?
  25. 25.🌈 In the resistor colour code, which number does black stand for?
  26. 26.🌈 A resistor has the colour bands white, blue, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  29. 29.🌈 In the resistor colour code, which number does grey stand for?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) red-brown-orange (b) red-brown-yellow (c) brown-red-orange (d) red-brown-red
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 700 Ω resistor? (a) grey-violet-brown (b) violet-black-brown (c) violet-black-red (d) violet-black-black
  32. 32.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands orange, white, red. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 610 Ω resistor? (a) brown-blue-brown (b) blue-brown-red (c) blue-brown-brown (d) blue-brown-black
  35. 35.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does blue stand for?
  37. 37.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. 24
  3. 21
  4. 7
  5. 5 %
  6. red-grey-orange
  7. orange-green-red
  8. 120
  9. 2800
  10. 9
  11. 8.3
  12. 79000
  13. 1700
  14. 15
  15. 3
  16. 75
  17. 1
  18. blue-red-red
  19. blue-black-red
  20. 220
  21. 86
  22. 34000
  23. 28
  24. 5
  25. 0
  26. 9.6
  27. 6.1
  28. 7000
  29. 8
  30. red-brown-orange
  31. violet-black-brown
  32. 920
  33. 3900
  34. blue-brown-brown
  35. 910
  36. 6
  37. 32
  38. 47
  39. 1.6
  40. 3400

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