← Resistor colour code lesson New set →

Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 491 · 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 grey stand for?
  2. 2.🌈 A resistor has the colour bands grey, black, brown. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands violet, yellow, black. What is its value (in ohms)?
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 25 % (d) 50 %
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2500 Ω resistor? (a) green-red-red (b) red-green-orange (c) red-green-red (d) red-green-brown
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9000 Ω resistor? (a) white-black-brown (b) white-black-orange (c) white-black-red (d) brown-white-red
  7. 7.🌈 In the resistor colour code, which number does blue stand for?
  8. 8.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the gold band (d) the one nearest an end
  9. 9.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) violet-orange-black (b) yellow-violet-black (c) orange-violet-black (d) orange-violet-brown
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9400 Ω resistor? (a) white-yellow-orange (b) yellow-white-red (c) white-yellow-red (d) white-yellow-brown
  12. 12.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 In the resistor colour code, which number does green stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 470 Ω resistor? (a) violet-yellow-brown (b) yellow-violet-brown (c) yellow-violet-black (d) yellow-violet-red
  15. 15.🌈 In the resistor colour code, which number does white stand for?
  16. 16.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12 Ω resistor? (a) brown-red-black (b) red-red-black (c) red-brown-black (d) brown-red-brown
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) red-green-black (b) green-red-brown (c) green-red-black (d) blue-red-black
  20. 20.🌈 In the resistor colour code, which number does violet stand for?
  21. 21.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands grey, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands orange, grey, brown. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does orange stand for?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) orange-red-orange (b) red-orange-orange (c) red-orange-red (d) red-orange-yellow
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7300 Ω resistor? (a) violet-orange-orange (b) orange-violet-red (c) violet-orange-brown (d) violet-orange-red
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) orange-yellow-brown (b) yellow-orange-black (c) yellow-orange-brown (d) yellow-orange-red
  28. 28.🌈 A resistor has the colour bands white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does black stand for?
  31. 31.🌈 In the resistor colour code, which number does yellow stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) red-violet-black (b) violet-red-black (c) grey-red-black (d) violet-red-brown
  33. 33.🌈 A resistor has the colour bands grey, grey, red. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33000 Ω resistor? (a) orange-orange-yellow (b) orange-orange-red (c) orange-orange-orange (d) orange-yellow-orange
  35. 35.🌈 A resistor has the colour bands green, blue, orange. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands violet, orange, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands brown, black, red. What is its value (in ohms)?

Answer key

  1. 8
  2. 800
  3. 74
  4. 5 %
  5. red-green-red
  6. white-black-red
  7. 6
  8. the one nearest an end
  9. 6.8
  10. orange-violet-black
  11. white-yellow-red
  12. 220
  13. 5
  14. yellow-violet-brown
  15. 9
  16. 2.4
  17. 3.2
  18. brown-red-black
  19. green-red-black
  20. 7
  21. 25
  22. 870
  23. 380
  24. 3
  25. red-orange-orange
  26. violet-orange-red
  27. yellow-orange-brown
  28. 970
  29. 810
  30. 0
  31. 4
  32. violet-red-black
  33. 8800
  34. orange-orange-orange
  35. 56
  36. 15000
  37. 9900
  38. 7300
  39. 620
  40. 1000

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