← Resistor colour code lesson New set →

Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 241 · 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) 25 % (b) 0 % (c) 5 % (d) 50 %
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27 Ω resistor? (a) red-violet-black (b) red-violet-brown (c) violet-red-black (d) orange-violet-black
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 380 Ω resistor? (a) orange-grey-red (b) grey-orange-brown (c) orange-grey-brown (d) orange-grey-black
  4. 4.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands brown, green, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 63 Ω resistor? (a) violet-orange-black (b) orange-blue-black (c) blue-orange-brown (d) blue-orange-black
  10. 10.🌈 A resistor has the colour bands red, blue, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands blue, black, brown. What is its value (in ohms)?
  12. 12.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the widest gap (d) the gold band
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7000 Ω resistor? (a) violet-black-red (b) violet-black-brown (c) grey-violet-red (d) violet-black-orange
  14. 14.🌈 In the resistor colour code, which number does orange stand for?
  15. 15.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does brown stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 49 Ω resistor? (a) white-yellow-black (b) green-white-black (c) yellow-white-brown (d) yellow-white-black
  19. 19.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) orange-grey-black (b) grey-orange-black (c) orange-grey-brown (d) yellow-grey-black
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 740 Ω resistor? (a) violet-yellow-black (b) violet-yellow-red (c) yellow-violet-brown (d) violet-yellow-brown
  22. 22.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 In the resistor colour code, which number does blue stand for?
  24. 24.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12000 Ω resistor? (a) brown-red-red (b) brown-red-yellow (c) brown-red-orange (d) red-brown-orange
  26. 26.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 In the resistor colour code, which number does white stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) violet-red-brown (b) grey-red-black (c) red-violet-black (d) violet-red-black
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57 Ω resistor? (a) blue-violet-black (b) green-violet-brown (c) violet-green-black (d) green-violet-black
  30. 30.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 790 Ω resistor? (a) violet-white-red (b) violet-white-brown (c) violet-white-black (d) white-violet-brown
  32. 32.🌈 In the resistor colour code, which number does yellow stand for?
  33. 33.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31 Ω resistor? (a) yellow-brown-black (b) orange-brown-brown (c) brown-orange-black (d) orange-brown-black
  35. 35.🌈 In the resistor colour code, which number does red stand for?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7300 Ω resistor? (a) violet-orange-red (b) orange-violet-red (c) violet-orange-brown (d) violet-orange-orange
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67 Ω resistor? (a) blue-violet-black (b) violet-violet-black (c) violet-blue-black (d) blue-violet-brown
  38. 38.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) yellow-grey-red (b) yellow-grey-brown (c) grey-yellow-red (d) yellow-grey-orange
  40. 40.🌈 In the resistor colour code, which number does black stand for?

Answer key

  1. 5 %
  2. red-violet-black
  3. orange-grey-brown
  4. 620
  5. 27000
  6. 3.7
  7. 150
  8. 15
  9. blue-orange-black
  10. 2.6
  11. 600
  12. the one nearest an end
  13. violet-black-red
  14. 3
  15. 40000
  16. 54000
  17. 1
  18. yellow-white-black
  19. 130
  20. orange-grey-black
  21. violet-yellow-brown
  22. 8.5
  23. 6
  24. 390
  25. brown-red-orange
  26. 2.8
  27. 9
  28. violet-red-black
  29. green-violet-black
  30. 730
  31. violet-white-brown
  32. 4
  33. 250
  34. orange-brown-black
  35. 2
  36. violet-orange-red
  37. blue-violet-black
  38. 4
  39. yellow-grey-red
  40. 0

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