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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 629 · 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, brown, orange. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) green-yellow-black (b) green-black-black (c) yellow-black-black (d) yellow-black-brown
  3. 3.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  4. 4.🌈 A resistor has the colour bands blue, grey, orange. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does blue stand for?
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-brown-red (b) brown-brown-orange (c) brown-brown-brown (d) brown-red-red
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) orange-violet-brown (b) violet-orange-black (c) yellow-violet-black (d) orange-violet-black
  8. 8.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
  9. 9.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 In the resistor colour code, which number does yellow stand for?
  13. 13.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48000 Ω resistor? (a) yellow-grey-orange (b) grey-yellow-orange (c) yellow-grey-red (d) yellow-grey-yellow
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) red-grey-black (b) grey-brown-black (c) brown-grey-brown (d) brown-grey-black
  17. 17.🌈 In the resistor colour code, which number does black stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) red-grey-orange (b) red-grey-red (c) grey-red-red (d) red-grey-brown
  19. 19.🌈 In the resistor colour code, which number does red stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 920 Ω resistor? (a) white-red-brown (b) white-red-black (c) white-red-red (d) red-white-brown
  21. 21.🌈 A resistor has the colour bands yellow, green, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands yellow, blue, orange. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69 Ω resistor? (a) blue-white-black (b) white-blue-black (c) violet-white-black (d) blue-white-brown
  25. 25.🌈 A resistor has the colour bands yellow, black, yellow. 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 orange, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3500 Ω resistor? (a) orange-green-brown (b) green-orange-red (c) orange-green-orange (d) orange-green-red
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) brown-green-brown (b) green-brown-brown (c) green-brown-black (d) green-brown-red
  30. 30.🌈 A resistor has the colour bands blue, blue, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does orange stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) white-orange-brown (b) white-orange-black (c) white-orange-red (d) orange-white-brown
  33. 33.🌈 In the resistor colour code, which number does brown stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 70000 Ω resistor? (a) violet-black-yellow (b) grey-violet-orange (c) violet-black-red (d) violet-black-orange
  35. 35.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands grey, blue, red. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) orange-red-black (b) orange-orange-black (c) red-orange-brown (d) red-orange-black
  39. 39.🌈 A resistor has the colour bands yellow, violet, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 31000
  2. yellow-black-black
  3. 5 %
  4. 68000
  5. 6
  6. brown-brown-red
  7. orange-violet-black
  8. the one nearest an end
  9. 12000
  10. 12
  11. 1.4
  12. 4
  13. 120
  14. 32000
  15. yellow-grey-orange
  16. brown-grey-black
  17. 0
  18. red-grey-red
  19. 2
  20. white-red-brown
  21. 450
  22. 33
  23. 46000
  24. blue-white-black
  25. 400
  26. 5
  27. 370
  28. orange-green-red
  29. green-brown-brown
  30. 6.6
  31. 3
  32. white-orange-brown
  33. 1
  34. violet-black-orange
  35. 9.5
  36. 8600
  37. 89000
  38. red-orange-black
  39. 470
  40. 6.7

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