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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 224 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 840 Ω resistor? (a) grey-yellow-red (b) grey-yellow-brown (c) grey-yellow-black (d) yellow-grey-brown
  2. 2.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  3. 3.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) blue-violet-black (b) grey-blue-black (c) violet-blue-black (d) violet-blue-brown
  5. 5.🌈 A resistor has the colour bands violet, red, yellow. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 A resistor has the colour bands red, blue, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands yellow, green, orange. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands orange, brown, black. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) grey-green-brown (b) green-grey-black (c) green-grey-red (d) green-grey-brown
  10. 10.🌈 A resistor has the colour bands green, orange, brown. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) brown-white-brown (b) white-black-red (c) white-black-brown (d) white-black-black
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) white-yellow-black (b) grey-yellow-brown (c) grey-yellow-black (d) yellow-grey-black
  16. 16.🌈 In the resistor colour code, which number does white stand for?
  17. 17.🌈 A resistor has the colour bands green, blue, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  20. 20.🌈 In the resistor colour code, which number does violet stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) red-brown-brown (b) brown-red-red (c) red-brown-red (d) red-brown-orange
  22. 22.🌈 In the resistor colour code, which number does brown stand for?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 190 Ω resistor? (a) brown-white-black (b) white-brown-brown (c) brown-white-red (d) brown-white-brown
  24. 24.🌈 A resistor has the colour bands brown, violet, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29 Ω resistor? (a) white-red-black (b) red-white-brown (c) orange-white-black (d) red-white-black
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) red-brown-red (b) brown-red-orange (c) brown-red-brown (d) brown-red-red
  27. 27.🌈 A resistor has the colour bands red, violet, orange. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69 Ω resistor? (a) blue-white-brown (b) blue-white-black (c) violet-white-black (d) white-blue-black
  30. 30.🌈 A resistor has the colour bands green, brown, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) red-black-black (b) brown-black-brown (c) brown-black-black (d) red-brown-black
  32. 32.🌈 A resistor has the colour bands white, violet, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands brown, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) red-brown-red (b) red-brown-yellow (c) red-brown-orange (d) brown-red-orange
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) yellow-orange-black (b) yellow-black-black (c) orange-black-brown (d) orange-black-black
  36. 36.🌈 A resistor has the colour bands orange, blue, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands white, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does black stand for?

Answer key

  1. grey-yellow-brown
  2. the one nearest an end
  3. 47
  4. violet-blue-black
  5. 720
  6. 26
  7. 45
  8. 31
  9. green-grey-brown
  10. 530
  11. 110
  12. 100
  13. white-black-brown
  14. 5 %
  15. grey-yellow-black
  16. 9
  17. 5.6
  18. 10
  19. 170
  20. 7
  21. red-brown-red
  22. 1
  23. brown-white-brown
  24. 1.7
  25. red-white-black
  26. brown-red-red
  27. 27
  28. 510
  29. blue-white-black
  30. 51
  31. brown-black-black
  32. 97000
  33. 110
  34. red-brown-orange
  35. orange-black-black
  36. 36
  37. 16
  38. 930
  39. 130
  40. 0

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