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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 181 · 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-black (b) yellow-grey-brown (c) grey-yellow-red (d) grey-yellow-brown
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) grey-black-black (b) white-black-black (c) grey-black-brown (d) white-grey-black
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 27 Ω resistor? (a) orange-violet-black (b) red-violet-black (c) red-violet-brown (d) violet-red-black
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 47 Ω resistor? (a) yellow-violet-black (b) violet-yellow-black (c) green-violet-black (d) yellow-violet-brown
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 410 Ω resistor? (a) yellow-brown-red (b) yellow-brown-brown (c) yellow-brown-black (d) brown-yellow-brown
  7. 7.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 240 Ω resistor? (a) red-yellow-red (b) yellow-red-brown (c) red-yellow-black (d) red-yellow-brown
  9. 9.🌈 In the resistor colour code, which number does yellow stand for?
  10. 10.🌈 In the resistor colour code, which number does blue stand for?
  11. 11.🌈 A resistor has the colour bands orange, violet, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands white, violet, orange. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does red stand for?
  14. 14.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands brown, orange, orange. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) orange-violet-brown (b) orange-violet-black (c) violet-orange-black (d) yellow-violet-black
  20. 20.🌈 A resistor has the colour bands violet, black, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands blue, green, yellow. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, white, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands grey, orange, red. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) green-red-black (b) green-red-brown (c) red-green-black (d) blue-red-black
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-brown (b) white-red-brown (c) red-white-black (d) red-white-red
  28. 28.🌈 A resistor has the colour bands blue, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands blue, green, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands red, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands brown, blue, orange. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands grey, white, red. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands blue, blue, orange. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands blue, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 500 Ω resistor? (a) green-black-brown (b) green-black-red (c) blue-green-brown (d) green-black-black
  38. 38.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) grey-red-black (b) orange-grey-black (c) red-grey-brown (d) red-grey-black
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) orange-black-red (b) yellow-orange-red (c) orange-black-brown (d) orange-black-orange

Answer key

  1. grey-yellow-brown
  2. grey-black-black
  3. red-violet-black
  4. yellow-violet-black
  5. 5 %
  6. yellow-brown-brown
  7. the one nearest an end
  8. red-yellow-brown
  9. 4
  10. 6
  11. 3700
  12. 97000
  13. 2
  14. 950
  15. 4.1
  16. 130
  17. 13000
  18. 6100
  19. orange-violet-black
  20. 700
  21. 220
  22. 650
  23. 170
  24. 190
  25. 8300
  26. green-red-black
  27. red-white-brown
  28. 660
  29. 650
  30. 17
  31. 24
  32. 16000
  33. 4.2
  34. 8900
  35. 66000
  36. 680
  37. green-black-brown
  38. 600
  39. red-grey-black
  40. orange-black-red

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