← Resistor colour code lesson New set →

Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 249 · 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 gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  2. 2.🌈 In the resistor colour code, which number does yellow stand for?
  3. 3.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) brown-grey-brown (b) brown-grey-orange (c) grey-brown-red (d) brown-grey-red
  5. 5.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) green-violet-black (b) yellow-violet-brown (c) violet-yellow-black (d) yellow-violet-black
  9. 9.🌈 A resistor has the colour bands red, violet, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands green, grey, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands orange, red, brown. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does green stand for?
  13. 13.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 330 Ω resistor? (a) orange-orange-red (b) orange-orange-brown (c) orange-orange-black (d) orange-yellow-brown
  15. 15.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) yellow-orange-red (b) orange-black-orange (c) orange-black-brown (d) orange-black-red
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-brown-red (b) brown-brown-brown (c) brown-red-red (d) brown-brown-orange
  18. 18.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) blue-red-brown (b) blue-red-black (c) blue-red-red (d) red-blue-brown
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) red-yellow-orange (b) yellow-red-yellow (c) yellow-red-orange (d) yellow-red-red
  21. 21.🌈 A resistor has the colour bands brown, grey, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands grey, orange, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26 Ω resistor? (a) orange-blue-black (b) red-blue-brown (c) red-blue-black (d) blue-red-black
  24. 24.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does orange stand for?
  28. 28.🌈 A resistor has the colour bands red, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 In the resistor colour code, which number does black stand for?
  30. 30.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 950 Ω resistor? (a) green-white-brown (b) white-green-black (c) white-green-red (d) white-green-brown
  32. 32.🌈 A resistor has the colour bands orange, green, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands grey, red, orange. What is its value (in ohms)?
  34. 34.🌈 In the resistor colour code, which number does blue stand for?
  35. 35.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91 Ω resistor? (a) white-brown-brown (b) brown-white-black (c) brown-brown-black (d) white-brown-black
  37. 37.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93 Ω resistor? (a) brown-orange-black (b) white-orange-brown (c) orange-white-black (d) white-orange-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) grey-black-brown (b) white-grey-black (c) grey-black-black (d) white-black-black
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 850 Ω resistor? (a) grey-green-black (b) grey-green-red (c) grey-green-brown (d) green-grey-brown

Answer key

  1. 5 %
  2. 4
  3. 6.8
  4. brown-grey-red
  5. 70000
  6. 6.7
  7. 22
  8. yellow-violet-black
  9. 27
  10. 5.8
  11. 320
  12. 5
  13. 680
  14. orange-orange-brown
  15. the one nearest an end
  16. orange-black-red
  17. brown-brown-red
  18. 15000
  19. blue-red-brown
  20. yellow-red-orange
  21. 18000
  22. 83
  23. red-blue-black
  24. 67
  25. 24000
  26. 25
  27. 3
  28. 270
  29. 0
  30. 20
  31. white-green-brown
  32. 3500
  33. 82000
  34. 6
  35. 38
  36. white-brown-black
  37. 28000
  38. white-orange-black
  39. grey-black-black
  40. grey-green-brown

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