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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 123 · 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) the widest gap (b) any band (c) the gold band (d) the one nearest an end
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 330 Ω resistor? (a) orange-orange-black (b) orange-yellow-brown (c) orange-orange-brown (d) orange-orange-red
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 25 % (d) 0 %
  4. 4.🌈 In the resistor colour code, which number does green stand for?
  5. 5.🌈 A resistor has the colour bands blue, orange, brown. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does red stand for?
  7. 7.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81000 Ω resistor? (a) grey-brown-yellow (b) grey-brown-red (c) brown-grey-orange (d) grey-brown-orange
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 340 Ω resistor? (a) yellow-orange-brown (b) orange-yellow-brown (c) orange-yellow-red (d) orange-yellow-black
  10. 10.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13 Ω resistor? (a) orange-brown-black (b) brown-orange-brown (c) red-orange-black (d) brown-orange-black
  12. 12.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  13. 13.🌈 A resistor has the colour bands blue, orange, red. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56 Ω resistor? (a) blue-blue-black (b) blue-green-black (c) green-blue-brown (d) green-blue-black
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 170 Ω resistor? (a) violet-brown-brown (b) brown-violet-red (c) brown-violet-black (d) brown-violet-brown
  16. 16.🌈 In the resistor colour code, which number does white stand for?
  17. 17.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
  19. 19.🌈 In the resistor colour code, which number does black stand for?
  20. 20.🌈 A resistor has the colour bands brown, violet, red. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 320 Ω resistor? (a) orange-red-brown (b) red-orange-brown (c) orange-red-black (d) orange-red-red
  22. 22.🌈 In the resistor colour code, which number does brown stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) brown-grey-red (b) brown-grey-black (c) grey-brown-brown (d) brown-grey-brown
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75 Ω resistor? (a) violet-green-brown (b) violet-green-black (c) green-violet-black (d) grey-green-black
  25. 25.🌈 A resistor has the colour bands orange, white, orange. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) orange-black-yellow (b) orange-black-orange (c) orange-black-red (d) yellow-orange-orange
  27. 27.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53 Ω resistor? (a) green-orange-brown (b) green-orange-black (c) blue-orange-black (d) orange-green-black
  29. 29.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands white, green, orange. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does yellow stand for?
  32. 32.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 60 Ω resistor? (a) violet-blue-black (b) blue-black-black (c) blue-black-brown (d) violet-black-black
  34. 34.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35 Ω resistor? (a) green-orange-black (b) orange-green-black (c) yellow-green-black (d) orange-green-brown
  36. 36.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16 Ω resistor? (a) brown-blue-black (b) blue-brown-black (c) brown-blue-brown (d) red-blue-black
  40. 40.🌈 A resistor has the colour bands white, violet, black. What is its value (in ohms)?

Answer key

  1. the one nearest an end
  2. orange-orange-brown
  3. 5 %
  4. 5
  5. 630
  6. 2
  7. 29
  8. grey-brown-orange
  9. orange-yellow-brown
  10. 1100
  11. brown-orange-black
  12. 20
  13. 6300
  14. green-blue-black
  15. brown-violet-brown
  16. 9
  17. 26
  18. 1400
  19. 0
  20. 1700
  21. orange-red-brown
  22. 1
  23. brown-grey-brown
  24. violet-green-black
  25. 39000
  26. orange-black-orange
  27. 920
  28. green-orange-black
  29. 710
  30. 95000
  31. 4
  32. 490
  33. blue-black-black
  34. 6.3
  35. orange-green-black
  36. 700
  37. 20000
  38. 27
  39. brown-blue-black
  40. 97

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