← Resistor colour code lesson New set →

Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 380 · 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 colour bands (1st digit, 2nd digit, multiplier) mark an 8100 Ω resistor? (a) grey-brown-brown (b) grey-brown-orange (c) grey-brown-red (d) brown-grey-red
  2. 2.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56 Ω resistor? (a) blue-blue-black (b) blue-green-black (c) green-blue-black (d) green-blue-brown
  4. 4.🌈 A resistor has the colour bands grey, violet, red. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands grey, white, red. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands violet, violet, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5200 Ω resistor? (a) green-red-orange (b) green-red-brown (c) red-green-red (d) green-red-red
  9. 9.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  11. 11.🌈 A resistor has the colour bands red, grey, brown. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does black stand for?
  13. 13.🌈 A resistor has the colour bands yellow, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does grey stand for?
  15. 15.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does orange stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 280 Ω resistor? (a) red-grey-red (b) red-grey-brown (c) grey-red-brown (d) red-grey-black
  18. 18.🌈 In the resistor colour code, which number does green stand for?
  19. 19.🌈 In the resistor colour code, which number does violet stand for?
  20. 20.🌈 In the resistor colour code, which number does red stand for?
  21. 21.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 In the resistor colour code, which number does white stand for?
  24. 24.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  25. 25.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
  26. 26.🌈 In the resistor colour code, which number does brown stand for?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8700 Ω resistor? (a) grey-violet-orange (b) grey-violet-brown (c) grey-violet-red (d) violet-grey-red
  28. 28.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands green, orange, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands yellow, orange, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands brown, green, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 In the resistor colour code, which number does blue stand for?
  36. 36.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) red-green-yellow (b) green-red-orange (c) red-green-orange (d) red-green-red
  38. 38.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. grey-brown-red
  2. 44000
  3. green-blue-black
  4. 8.7
  5. 8900
  6. 6
  7. 7.7
  8. green-red-red
  9. 80
  10. 5 %
  11. 280
  12. 0
  13. 410
  14. 8
  15. 790
  16. 3
  17. red-grey-brown
  18. 5
  19. 7
  20. 2
  21. 4
  22. 3.6
  23. 9
  24. 620
  25. the one nearest an end
  26. 1
  27. grey-violet-red
  28. 710
  29. 5.3
  30. 43
  31. 41
  32. 80
  33. 10000
  34. 1.5
  35. 6
  36. 7000
  37. red-green-orange
  38. 94000
  39. 21
  40. 580

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