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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 301 · 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 brown, black, red. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does red stand for?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) green-brown-orange (b) brown-green-red (c) brown-green-yellow (d) brown-green-orange
  4. 4.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands blue, yellow, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands brown, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13 Ω resistor? (a) orange-brown-black (b) red-orange-black (c) brown-orange-black (d) brown-orange-brown
  11. 11.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
  12. 12.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does white stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 330 Ω resistor? (a) orange-orange-brown (b) orange-orange-red (c) orange-orange-black (d) orange-yellow-brown
  15. 15.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8100 Ω resistor? (a) brown-grey-red (b) grey-brown-orange (c) grey-brown-brown (d) grey-brown-red
  17. 17.🌈 A resistor has the colour bands white, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands yellow, green, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands orange, violet, orange. What is its value (in ohms)?
  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 79 Ω resistor? (a) violet-white-brown (b) white-violet-black (c) violet-white-black (d) grey-white-black
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4700 Ω resistor? (a) violet-yellow-red (b) yellow-violet-brown (c) yellow-violet-red (d) yellow-violet-orange
  24. 24.🌈 A resistor has the colour bands yellow, black, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands blue, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands violet, black, brown. What is its value (in ohms)?
  27. 27.🌈 In the resistor colour code, which number does yellow stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84000 Ω resistor? (a) grey-yellow-yellow (b) grey-yellow-orange (c) grey-yellow-red (d) yellow-grey-orange
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4000 Ω resistor? (a) green-yellow-red (b) yellow-black-orange (c) yellow-black-brown (d) yellow-black-red
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65000 Ω resistor? (a) blue-green-yellow (b) blue-green-orange (c) blue-green-red (d) green-blue-orange
  31. 31.🌈 In the resistor colour code, which number does violet stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) red-orange-yellow (b) red-orange-orange (c) orange-red-orange (d) red-orange-red
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) yellow-green-brown (b) yellow-green-black (c) green-green-black (d) green-yellow-black
  34. 34.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does green stand for?
  36. 36.🌈 A resistor has the colour bands red, black, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8200 Ω resistor? (a) grey-red-orange (b) grey-red-brown (c) red-grey-red (d) grey-red-red
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) white-black-black (b) grey-black-black (c) grey-black-brown (d) white-grey-black
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-brown (b) red-violet-red (c) violet-red-brown (d) red-violet-black
  40. 40.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?

Answer key

  1. 1000
  2. 2
  3. brown-green-orange
  4. 85000
  5. 240
  6. 6.4
  7. 140
  8. 67
  9. 29
  10. brown-orange-black
  11. the one nearest an end
  12. 900
  13. 9
  14. orange-orange-brown
  15. 5 %
  16. grey-brown-red
  17. 960
  18. 85
  19. 45
  20. 37000
  21. 1
  22. violet-white-black
  23. yellow-violet-red
  24. 4
  25. 64
  26. 700
  27. 4
  28. grey-yellow-orange
  29. yellow-black-red
  30. blue-green-orange
  31. 7
  32. red-orange-orange
  33. yellow-green-black
  34. 990
  35. 5
  36. 20
  37. grey-red-red
  38. grey-black-black
  39. red-violet-brown
  40. 15000

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