← Resistor colour code lesson New set →

Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 619 · 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.🌈 In the resistor colour code, which number does black stand for?
  2. 2.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands violet, blue, black. What is its value (in ohms)?
  4. 4.🌈 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
  5. 5.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands blue, blue, brown. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 390 Ω resistor? (a) white-orange-brown (b) orange-white-black (c) orange-white-red (d) orange-white-brown
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 0 % (d) 50 %
  9. 9.🌈 A resistor has the colour bands violet, green, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) yellow-grey-black (b) green-grey-black (c) yellow-grey-brown (d) grey-yellow-black
  11. 11.🌈 A resistor has the colour bands red, grey, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands yellow, orange, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands yellow, violet, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 240 Ω resistor? (a) red-yellow-red (b) red-yellow-black (c) yellow-red-brown (d) red-yellow-brown
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 42000 Ω resistor? (a) yellow-red-orange (b) yellow-red-red (c) red-yellow-orange (d) yellow-red-yellow
  19. 19.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does blue stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 260 Ω resistor? (a) red-blue-brown (b) blue-red-brown (c) red-blue-red (d) red-blue-black
  22. 22.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1800 Ω resistor? (a) grey-brown-red (b) brown-grey-brown (c) brown-grey-red (d) brown-grey-orange
  24. 24.🌈 In the resistor colour code, which number does white stand for?
  25. 25.🌈 A resistor has the colour bands red, green, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands orange, white, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4000 Ω resistor? (a) yellow-black-orange (b) yellow-black-red (c) green-yellow-red (d) yellow-black-brown
  28. 28.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2400 Ω resistor? (a) yellow-red-red (b) red-yellow-brown (c) red-yellow-orange (d) red-yellow-red
  32. 32.🌈 A resistor has the colour bands grey, brown, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 In the resistor colour code, which number does violet stand for?
  36. 36.🌈 A resistor has the colour bands green, blue, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands orange, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 In the resistor colour code, which number does red stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 450 Ω resistor? (a) yellow-green-black (b) green-yellow-brown (c) yellow-green-red (d) yellow-green-brown
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) brown-grey-black (b) brown-grey-brown (c) grey-brown-black (d) red-grey-black

Answer key

  1. 0
  2. 38
  3. 76
  4. the one nearest an end
  5. 28000
  6. 660
  7. orange-white-brown
  8. 5 %
  9. 75
  10. yellow-grey-black
  11. 2800
  12. 4.3
  13. 21
  14. 230
  15. 4.7
  16. 3.7
  17. red-yellow-brown
  18. yellow-red-orange
  19. 72000
  20. 6
  21. red-blue-brown
  22. 10
  23. brown-grey-red
  24. 9
  25. 25
  26. 39
  27. yellow-black-red
  28. 52
  29. 2600
  30. 100
  31. red-yellow-red
  32. 8100
  33. 59
  34. 870
  35. 7
  36. 560
  37. 370
  38. 2
  39. yellow-green-brown
  40. brown-grey-black

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