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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 700 · 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 grey, black, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) violet-blue-black (b) blue-violet-brown (c) violet-blue-red (d) violet-blue-brown
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29000 Ω resistor? (a) red-white-orange (b) white-red-orange (c) red-white-yellow (d) red-white-red
  4. 4.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  5. 5.🌈 In the resistor colour code, which number does black stand for?
  6. 6.🌈 A resistor has the colour bands orange, white, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands white, orange, black. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands red, brown, black. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73 Ω resistor? (a) violet-orange-brown (b) grey-orange-black (c) violet-orange-black (d) orange-violet-black
  12. 12.🌈 In the resistor colour code, which number does orange stand for?
  13. 13.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  14. 14.🌈 In the resistor colour code, which number does white stand for?
  15. 15.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5100 Ω resistor? (a) green-brown-orange (b) brown-green-red (c) green-brown-brown (d) green-brown-red
  17. 17.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands green, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-black (b) red-orange-red (c) red-orange-brown (d) orange-red-brown
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) violet-yellow-black (b) yellow-violet-brown (c) yellow-violet-black (d) green-violet-black
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 940 Ω resistor? (a) yellow-white-brown (b) white-yellow-red (c) white-yellow-black (d) white-yellow-brown
  23. 23.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
  24. 24.🌈 A resistor has the colour bands red, orange, black. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands grey, yellow, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands grey, black, orange. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does green stand for?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) white-black-black (b) white-grey-black (c) grey-black-black (d) grey-black-brown
  32. 32.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-red (b) white-red-brown (c) red-white-black (d) red-white-brown
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) brown-black-brown (b) red-black-black (c) brown-black-black (d) red-brown-black
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 59000 Ω resistor? (a) green-white-orange (b) white-green-orange (c) green-white-red (d) green-white-yellow
  38. 38.🌈 In the resistor colour code, which number does grey stand for?
  39. 39.🌈 A resistor has the colour bands violet, white, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 67 Ω resistor? (a) violet-violet-black (b) violet-blue-black (c) blue-violet-black (d) blue-violet-brown

Answer key

  1. 800
  2. violet-blue-brown
  3. red-white-orange
  4. 5 %
  5. 0
  6. 390
  7. 9.8
  8. 390
  9. 93
  10. 21
  11. violet-orange-black
  12. 3
  13. 12
  14. 9
  15. 2.4
  16. green-brown-red
  17. 6100
  18. 12
  19. 540
  20. red-orange-brown
  21. yellow-violet-black
  22. white-yellow-brown
  23. the one nearest an end
  24. 23
  25. 840
  26. 80
  27. 80000
  28. 14000
  29. 31
  30. 5
  31. grey-black-black
  32. 81000
  33. 570
  34. 92
  35. red-white-brown
  36. brown-black-black
  37. green-white-orange
  38. 8
  39. 790
  40. blue-violet-black

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