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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 404 · 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 violet, red, brown. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55 Ω resistor? (a) green-green-black (b) green-green-brown (c) green-blue-black (d) blue-green-black
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) yellow-brown-brown (b) green-brown-black (c) brown-yellow-black (d) yellow-brown-black
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) green-brown-black (b) brown-green-brown (c) green-brown-red (d) green-brown-brown
  5. 5.🌈 In the resistor colour code, which number does red stand for?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 50 % (d) 5 %
  7. 7.🌈 A resistor has the colour bands brown, red, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does brown stand for?
  11. 11.🌈 A resistor has the colour bands blue, violet, red. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does black stand for?
  13. 13.🌈 A resistor has the colour bands grey, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-black-black (b) red-black-brown (c) red-black-black (d) orange-red-black
  15. 15.🌈 In the resistor colour code, which number does yellow stand for?
  16. 16.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the gold band (d) the widest gap
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 31000 Ω resistor? (a) orange-brown-red (b) brown-orange-orange (c) orange-brown-yellow (d) orange-brown-orange
  18. 18.🌈 In the resistor colour code, which number does blue stand for?
  19. 19.🌈 A resistor has the colour bands green, green, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands orange, orange, red. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43000 Ω resistor? (a) yellow-orange-yellow (b) yellow-orange-orange (c) yellow-orange-red (d) orange-yellow-orange
  23. 23.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48 Ω resistor? (a) grey-yellow-black (b) yellow-grey-brown (c) green-grey-black (d) yellow-grey-black
  25. 25.🌈 A resistor has the colour bands brown, black, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 In the resistor colour code, which number does white stand for?
  27. 27.🌈 A resistor has the colour bands green, orange, black. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands orange, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 420 Ω resistor? (a) yellow-red-black (b) yellow-red-brown (c) red-yellow-brown (d) yellow-red-red
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66 Ω resistor? (a) blue-blue-brown (b) blue-violet-black (c) blue-blue-black (d) violet-blue-black
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) orange-black-yellow (b) yellow-orange-orange (c) orange-black-red (d) orange-black-orange
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14000 Ω resistor? (a) brown-yellow-yellow (b) brown-yellow-orange (c) brown-yellow-red (d) yellow-brown-orange
  33. 33.🌈 In the resistor colour code, which number does green stand for?
  34. 34.🌈 A resistor has the colour bands brown, white, black. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does orange stand for?
  36. 36.🌈 A resistor has the colour bands yellow, red, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands brown, white, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 730 Ω resistor? (a) orange-violet-brown (b) violet-orange-brown (c) violet-orange-red (d) violet-orange-black

Answer key

  1. 720
  2. green-green-black
  3. yellow-brown-black
  4. green-brown-brown
  5. 2
  6. 5 %
  7. 1.2
  8. 33
  9. 240
  10. 1
  11. 6700
  12. 0
  13. 840
  14. red-black-black
  15. 4
  16. the one nearest an end
  17. orange-brown-orange
  18. 6
  19. 55
  20. 3300
  21. 8.6
  22. yellow-orange-orange
  23. 28
  24. yellow-grey-black
  25. 100
  26. 9
  27. 53
  28. 310
  29. yellow-red-brown
  30. blue-blue-black
  31. orange-black-orange
  32. brown-yellow-orange
  33. 5
  34. 19
  35. 3
  36. 42
  37. 19
  38. 9100
  39. 2900
  40. violet-orange-brown

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