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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 365 · 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 red, green, orange. What is its value (in ohms)?
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-black (b) red-red-red (c) red-orange-brown (d) red-red-brown
  4. 4.🌈 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
  5. 5.🌈 In the resistor colour code, which number does yellow stand for?
  6. 6.🌈 In the resistor colour code, which number does grey stand for?
  7. 7.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
  8. 8.🌈 In the resistor colour code, which number does red stand for?
  9. 9.🌈 In the resistor colour code, which number does violet stand for?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 810 Ω resistor? (a) grey-brown-red (b) grey-brown-brown (c) brown-grey-brown (d) grey-brown-black
  11. 11.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86000 Ω resistor? (a) blue-grey-orange (b) grey-blue-yellow (c) grey-blue-orange (d) grey-blue-red
  14. 14.🌈 In the resistor colour code, which number does green stand for?
  15. 15.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands blue, brown, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands grey, yellow, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) red-orange-orange (b) orange-red-orange (c) red-orange-yellow (d) red-orange-red
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88000 Ω resistor? (a) grey-white-orange (b) grey-grey-orange (c) grey-grey-red (d) grey-grey-yellow
  20. 20.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26 Ω resistor? (a) red-blue-brown (b) red-blue-black (c) orange-blue-black (d) blue-red-black
  23. 23.🌈 In the resistor colour code, which number does blue stand for?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) red-brown-orange (b) brown-black-yellow (c) brown-black-orange (d) brown-black-red
  25. 25.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands white, green, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69 Ω resistor? (a) white-blue-black (b) blue-white-brown (c) blue-white-black (d) violet-white-black
  29. 29.🌈 A resistor has the colour bands yellow, white, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-red-red (b) brown-brown-red (c) brown-brown-brown (d) brown-brown-orange
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 590 Ω resistor? (a) green-white-red (b) green-white-black (c) white-green-brown (d) green-white-brown
  33. 33.🌈 A resistor has the colour bands green, white, brown. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands brown, blue, brown. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does black stand for?
  36. 36.🌈 A resistor has the colour bands green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands orange, brown, red. What is its value (in ohms)?

Answer key

  1. 25000
  2. 5 %
  3. red-red-brown
  4. the one nearest an end
  5. 4
  6. 8
  7. 62000
  8. 2
  9. 7
  10. grey-brown-brown
  11. 29
  12. 12
  13. grey-blue-orange
  14. 5
  15. 960
  16. 61
  17. 8.4
  18. red-orange-orange
  19. grey-grey-orange
  20. 7100
  21. 18
  22. red-blue-black
  23. 6
  24. brown-black-orange
  25. 89
  26. 95
  27. 510
  28. blue-white-black
  29. 49
  30. 18
  31. brown-brown-red
  32. green-white-brown
  33. 590
  34. 160
  35. 0
  36. 57
  37. 31
  38. 8.3
  39. 180
  40. 3100

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