← Resistor colour code lesson New set →

Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 624 · 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, grey, brown. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands yellow, white, red. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does violet stand for?
  5. 5.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67 Ω resistor? (a) violet-violet-black (b) blue-violet-brown (c) violet-blue-black (d) blue-violet-black
  7. 7.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 0 % (d) 50 %
  9. 9.🌈 In the resistor colour code, which number does orange stand for?
  10. 10.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  12. 12.🌈 In the resistor colour code, which number does brown stand for?
  13. 13.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands blue, violet, red. What is its value (in ohms)?
  15. 15.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) yellow-orange-red (b) yellow-orange-black (c) yellow-orange-brown (d) orange-yellow-brown
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90000 Ω resistor? (a) white-black-yellow (b) white-black-red (c) brown-white-orange (d) white-black-orange
  18. 18.🌈 In the resistor colour code, which number does black stand for?
  19. 19.🌈 A resistor has the colour bands yellow, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 In the resistor colour code, which number does red stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) red-violet-red (b) violet-red-brown (c) violet-red-red (d) violet-red-orange
  27. 27.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) grey-red-black (b) red-grey-brown (c) orange-grey-black (d) red-grey-black
  29. 29.🌈 A resistor has the colour bands blue, brown, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49000 Ω resistor? (a) white-yellow-orange (b) yellow-white-red (c) yellow-white-orange (d) yellow-white-yellow
  31. 31.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 6300 Ω resistor? (a) orange-blue-red (b) blue-orange-red (c) blue-orange-brown (d) blue-orange-orange
  33. 33.🌈 A resistor has the colour bands red, orange, red. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) grey-brown-brown (b) brown-grey-brown (c) brown-grey-red (d) brown-grey-black
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 120 Ω resistor? (a) brown-red-red (b) brown-red-brown (c) red-brown-brown (d) brown-red-black
  36. 36.🌈 A resistor has the colour bands white, grey, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 34 Ω resistor? (a) orange-yellow-black (b) yellow-orange-black (c) orange-yellow-brown (d) yellow-yellow-black
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76000 Ω resistor? (a) violet-blue-orange (b) violet-blue-yellow (c) violet-blue-red (d) blue-violet-orange
  39. 39.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7900 Ω resistor? (a) violet-white-red (b) white-violet-red (c) violet-white-brown (d) violet-white-orange

Answer key

  1. 280
  2. 4.9
  3. 8800
  4. 7
  5. 47
  6. blue-violet-black
  7. 3300
  8. 5 %
  9. 3
  10. 7.4
  11. the one nearest an end
  12. 1
  13. 85000
  14. 6700
  15. 710
  16. yellow-orange-brown
  17. white-black-orange
  18. 0
  19. 430
  20. 29
  21. 8400
  22. 92
  23. 45000
  24. 220
  25. 2
  26. violet-red-red
  27. 12000
  28. red-grey-black
  29. 61
  30. yellow-white-orange
  31. 91000
  32. blue-orange-red
  33. 2300
  34. brown-grey-brown
  35. brown-red-brown
  36. 98
  37. orange-yellow-black
  38. violet-blue-orange
  39. 54000
  40. violet-white-red

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids