← Resistor colour code lesson New set →

Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 536 · 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 orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 7200 Ω resistor? (a) violet-red-brown (b) violet-red-red (c) red-violet-red (d) violet-red-orange
  4. 4.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does brown stand for?
  6. 6.🌈 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
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 50 % (d) 25 %
  8. 8.🌈 A resistor has the colour bands white, black, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands brown, grey, red. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands white, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-black (b) grey-violet-brown (c) violet-grey-brown (d) grey-violet-red
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 490 Ω resistor? (a) yellow-white-red (b) white-yellow-brown (c) yellow-white-black (d) yellow-white-brown
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 91000 Ω resistor? (a) white-brown-yellow (b) brown-white-orange (c) white-brown-red (d) white-brown-orange
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) brown-black-orange (b) brown-black-yellow (c) brown-black-red (d) red-brown-orange
  15. 15.🌈 In the resistor colour code, which number does blue stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81000 Ω resistor? (a) brown-grey-orange (b) grey-brown-red (c) grey-brown-orange (d) grey-brown-yellow
  17. 17.🌈 In the resistor colour code, which number does black stand for?
  18. 18.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands orange, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands yellow, black, black. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 650 Ω resistor? (a) blue-green-red (b) blue-green-brown (c) blue-green-black (d) green-blue-brown
  24. 24.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands blue, orange, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 In the resistor colour code, which number does green stand for?
  27. 27.🌈 A resistor has the colour bands green, grey, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands orange, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands violet, green, black. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands white, brown, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands brown, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) brown-white-brown (b) brown-white-black (c) brown-white-red (d) white-brown-brown
  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 brown, red, red. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands blue, red, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 390
  2. 9000
  3. violet-red-red
  4. 30000
  5. 1
  6. the one nearest an end
  7. 5 %
  8. 9
  9. 1800
  10. 940
  11. grey-violet-brown
  12. yellow-white-brown
  13. white-brown-orange
  14. brown-black-orange
  15. 6
  16. grey-brown-orange
  17. 0
  18. 1400
  19. 6100
  20. 2
  21. 360
  22. 40
  23. blue-green-brown
  24. 85
  25. 6.3
  26. 5
  27. 58
  28. 8.2
  29. 32
  30. 71
  31. 330
  32. 75
  33. 91000
  34. 210
  35. 72
  36. 160
  37. brown-white-brown
  38. 44
  39. 1.2
  40. 62

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