← Resistor colour code lesson New set →

Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 691 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) green-red-black (b) red-green-brown (c) orange-green-black (d) red-green-black
  3. 3.🌈 A resistor has the colour bands violet, green, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does grey stand for?
  6. 6.🌈 In the resistor colour code, which number does green stand for?
  7. 7.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) orange-grey-brown (b) grey-orange-black (c) yellow-grey-black (d) orange-grey-black
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 90 Ω resistor? (a) brown-black-black (b) white-black-black (c) brown-white-black (d) white-black-brown
  10. 10.🌈 A resistor has the colour bands white, orange, red. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 630 Ω resistor? (a) orange-blue-brown (b) blue-orange-red (c) blue-orange-brown (d) blue-orange-black
  12. 12.🌈 A resistor has the colour bands violet, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands violet, brown, brown. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 980 Ω resistor? (a) white-grey-black (b) white-grey-red (c) grey-white-brown (d) white-grey-brown
  15. 15.🌈 A resistor has the colour bands green, black, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) red-orange-brown (b) orange-orange-black (c) orange-red-black (d) red-orange-black
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 320 Ω resistor? (a) orange-red-black (b) orange-red-brown (c) red-orange-brown (d) orange-red-red
  18. 18.🌈 A resistor has the colour bands orange, grey, black. What is its value (in ohms)?
  19. 19.🌈 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
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 87 Ω resistor? (a) violet-grey-black (b) grey-violet-brown (c) grey-violet-black (d) white-violet-black
  21. 21.🌈 A resistor has the colour bands orange, orange, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 In the resistor colour code, which number does yellow stand for?
  23. 23.🌈 A resistor has the colour bands red, red, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands orange, red, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, white, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does blue stand for?
  28. 28.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does white stand for?
  32. 32.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 In the resistor colour code, which number does violet stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) yellow-grey-orange (b) grey-yellow-red (c) yellow-grey-brown (d) yellow-grey-red
  35. 35.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands blue, blue, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands yellow, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands orange, brown, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1000 Ω resistor? (a) brown-black-orange (b) red-brown-red (c) brown-black-brown (d) brown-black-red

Answer key

  1. 5 %
  2. red-green-black
  3. 7.5
  4. 44000
  5. 8
  6. 5
  7. 67
  8. orange-grey-black
  9. white-black-black
  10. 9300
  11. blue-orange-brown
  12. 710
  13. 710
  14. white-grey-brown
  15. 5
  16. red-orange-black
  17. orange-red-brown
  18. 38
  19. the one nearest an end
  20. grey-violet-black
  21. 3.3
  22. 4
  23. 22
  24. 320
  25. 59
  26. 56
  27. 6
  28. 68
  29. 8.5
  30. 91000
  31. 9
  32. 1.2
  33. 7
  34. yellow-grey-red
  35. 8800
  36. 6600
  37. 6.8
  38. 44
  39. 3.1
  40. brown-black-red

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