← Resistor colour code lesson New set →

Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 552 · 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 green, grey, brown. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50000 Ω resistor? (a) green-black-red (b) green-black-orange (c) blue-green-orange (d) green-black-yellow
  3. 3.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) green-brown-black (b) green-brown-brown (c) brown-green-brown (d) green-brown-red
  5. 5.🌈 A resistor has the colour bands white, yellow, black. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands violet, blue, red. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands green, brown, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands red, black, brown. What is its value (in ohms)?
  12. 12.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
  13. 13.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does yellow stand for?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) red-brown-red (b) brown-black-orange (c) brown-black-brown (d) brown-black-red
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95000 Ω resistor? (a) white-green-yellow (b) green-white-orange (c) white-green-orange (d) white-green-red
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) grey-violet-black (b) grey-violet-brown (c) violet-grey-black (d) white-violet-black
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) brown-white-brown (b) white-black-black (c) white-black-red (d) white-black-brown
  19. 19.🌈 In the resistor colour code, which number does grey stand for?
  20. 20.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands yellow, white, orange. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands blue, green, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8200 Ω resistor? (a) grey-red-brown (b) red-grey-red (c) grey-red-orange (d) grey-red-red
  24. 24.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands grey, yellow, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands white, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 740 Ω resistor? (a) violet-yellow-brown (b) yellow-violet-brown (c) violet-yellow-red (d) violet-yellow-black
  31. 31.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 50 % (d) 0 %
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45000 Ω resistor? (a) yellow-green-orange (b) green-yellow-orange (c) yellow-green-red (d) yellow-green-yellow
  33. 33.🌈 In the resistor colour code, which number does green stand for?
  34. 34.🌈 In the resistor colour code, which number does brown stand for?
  35. 35.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands yellow, blue, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) red-brown-black (b) red-black-black (c) brown-black-black (d) brown-black-brown

Answer key

  1. 580
  2. green-black-orange
  3. 300
  4. green-brown-brown
  5. 94
  6. 7600
  7. 23
  8. 81000
  9. 51
  10. 14000
  11. 200
  12. the one nearest an end
  13. 390
  14. 4
  15. brown-black-red
  16. white-green-orange
  17. grey-violet-black
  18. white-black-brown
  19. 8
  20. 41
  21. 49000
  22. 65
  23. grey-red-red
  24. 21000
  25. 840
  26. 940
  27. 99
  28. 91000
  29. 2100
  30. violet-yellow-brown
  31. 5 %
  32. yellow-green-orange
  33. 5
  34. 1
  35. 3700
  36. 4.6
  37. 12
  38. 41
  39. 110
  40. brown-black-black

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