← Resistor colour code lesson New set →

Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 612 · 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, brown, red. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does violet stand for?
  3. 3.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does red stand for?
  5. 5.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands green, red, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) red-black-brown (b) red-black-black (c) red-black-red (d) orange-red-brown
  8. 8.🌈 In the resistor colour code, which number does brown stand for?
  9. 9.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65 Ω resistor? (a) blue-green-brown (b) green-blue-black (c) violet-green-black (d) blue-green-black
  11. 11.🌈 A resistor has the colour bands blue, orange, brown. What is its value (in ohms)?
  12. 12.🌈 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
  13. 13.🌈 A resistor has the colour bands green, blue, red. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  15. 15.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13 Ω resistor? (a) red-orange-black (b) brown-orange-brown (c) orange-brown-black (d) brown-orange-black
  17. 17.🌈 A resistor has the colour bands grey, black, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 In the resistor colour code, which number does grey stand for?
  19. 19.🌈 A resistor has the colour bands white, grey, brown. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands grey, green, brown. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 79 Ω resistor? (a) white-violet-black (b) grey-white-black (c) violet-white-black (d) violet-white-brown
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 68 Ω resistor? (a) blue-grey-brown (b) blue-grey-black (c) grey-blue-black (d) violet-grey-black
  24. 24.🌈 In the resistor colour code, which number does green stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) violet-blue-brown (b) violet-blue-black (c) blue-violet-black (d) grey-blue-black
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4100 Ω resistor? (a) brown-yellow-red (b) yellow-brown-brown (c) yellow-brown-red (d) yellow-brown-orange
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 990 Ω resistor? (a) white-white-red (b) white-white-black (c) white-white-brown (d) white-black-brown
  28. 28.🌈 A resistor has the colour bands yellow, brown, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands green, white, orange. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, brown, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  33. 33.🌈 In the resistor colour code, which number does yellow stand for?
  34. 34.🌈 A resistor has the colour bands green, green, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands white, brown, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) red-black-brown (b) orange-red-black (c) red-black-black (d) orange-black-black
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-red-black (b) red-orange-brown (c) red-red-red (d) red-red-brown
  39. 39.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) white-white-brown (b) brown-white-black (c) white-white-black (d) white-black-black

Answer key

  1. 5100
  2. 7
  3. 74
  4. 2
  5. 53
  6. 52
  7. red-black-brown
  8. 1
  9. 2500
  10. blue-green-black
  11. 630
  12. the one nearest an end
  13. 5.6
  14. 5 %
  15. 35
  16. brown-orange-black
  17. 8
  18. 8
  19. 980
  20. 360
  21. 850
  22. violet-white-black
  23. blue-grey-black
  24. 5
  25. violet-blue-black
  26. yellow-brown-red
  27. white-white-brown
  28. 41
  29. 59000
  30. 11000
  31. 780
  32. 89
  33. 4
  34. 55
  35. 91
  36. 22000
  37. red-black-black
  38. red-red-brown
  39. 81000
  40. white-white-black

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