← Resistor colour code lesson New set →

Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 405 · 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 red, brown, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2600 Ω resistor? (a) red-blue-orange (b) blue-red-red (c) red-blue-red (d) red-blue-brown
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-green-black (b) yellow-yellow-black (c) green-yellow-black (d) yellow-yellow-brown
  5. 5.🌈 In the resistor colour code, which number does red stand for?
  6. 6.🌈 A resistor has the colour bands violet, blue, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
  8. 8.🌈 In the resistor colour code, which number does yellow stand for?
  9. 9.🌈 A resistor has the colour bands white, black, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) orange-grey-brown (b) orange-grey-black (c) yellow-grey-black (d) grey-orange-black
  11. 11.🌈 A resistor has the colour bands green, yellow, black. What is its value (in ohms)?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1900 Ω resistor? (a) brown-white-red (b) brown-white-orange (c) white-brown-red (d) brown-white-brown
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) grey-red-black (b) violet-red-brown (c) red-violet-black (d) violet-red-black
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4000 Ω resistor? (a) yellow-black-red (b) yellow-black-orange (c) yellow-black-brown (d) green-yellow-red
  15. 15.🌈 In the resistor colour code, which number does green stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) violet-grey-brown (b) grey-violet-black (c) grey-violet-red (d) grey-violet-brown
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48000 Ω resistor? (a) yellow-grey-yellow (b) yellow-grey-orange (c) yellow-grey-red (d) grey-yellow-orange
  18. 18.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  19. 19.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands brown, green, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 In the resistor colour code, which number does brown stand for?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91 Ω resistor? (a) white-brown-brown (b) brown-white-black (c) brown-brown-black (d) white-brown-black
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3200 Ω resistor? (a) orange-red-red (b) orange-red-brown (c) red-orange-red (d) orange-red-orange
  24. 24.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) orange-black-red (b) orange-black-yellow (c) orange-black-orange (d) yellow-orange-orange
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9100 Ω resistor? (a) brown-white-red (b) white-brown-brown (c) white-brown-red (d) white-brown-orange
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 720 Ω resistor? (a) red-violet-brown (b) violet-red-black (c) violet-red-brown (d) violet-red-red
  28. 28.🌈 A resistor has the colour bands grey, blue, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands red, violet, red. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) orange-black-red (b) orange-black-brown (c) yellow-orange-red (d) orange-black-orange
  31. 31.🌈 A resistor has the colour bands brown, green, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands orange, violet, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 In the resistor colour code, which number does violet stand for?
  36. 36.🌈 In the resistor colour code, which number does white stand for?
  37. 37.🌈 In the resistor colour code, which number does grey stand for?
  38. 38.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, violet, orange. What is its value (in ohms)?

Answer key

  1. 21000
  2. 38
  3. red-blue-red
  4. yellow-yellow-black
  5. 2
  6. 76
  7. the one nearest an end
  8. 4
  9. 900
  10. orange-grey-black
  11. 54
  12. brown-white-red
  13. violet-red-black
  14. yellow-black-red
  15. 5
  16. grey-violet-brown
  17. yellow-grey-orange
  18. 5 %
  19. 13
  20. 150
  21. 1
  22. white-brown-black
  23. orange-red-red
  24. 940
  25. orange-black-orange
  26. white-brown-red
  27. violet-red-brown
  28. 8600
  29. 2700
  30. orange-black-red
  31. 15
  32. 37000
  33. 220
  34. 9.8
  35. 7
  36. 9
  37. 8
  38. 90
  39. 1500
  40. 27000

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