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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 498 · 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 red, red, red. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands red, green, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands orange, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 In the resistor colour code, which number does grey stand for?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 730 Ω resistor? (a) violet-orange-red (b) violet-orange-brown (c) violet-orange-black (d) orange-violet-brown
  6. 6.🌈 In the resistor colour code, which number does violet stand for?
  7. 7.🌈 A resistor has the colour bands orange, blue, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  9. 9.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  10. 10.🌈 In the resistor colour code, which number does red stand for?
  11. 11.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  12. 12.🌈 In the resistor colour code, which number does blue stand for?
  13. 13.🌈 A resistor has the colour bands violet, violet, red. What is its value (in ohms)?
  14. 14.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) the one nearest an end (d) any band
  15. 15.🌈 A resistor has the colour bands white, green, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands grey, yellow, red. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94 Ω resistor? (a) brown-yellow-black (b) white-yellow-brown (c) yellow-white-black (d) white-yellow-black
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) orange-yellow-brown (b) orange-yellow-orange (c) orange-yellow-red (d) yellow-orange-red
  19. 19.🌈 A resistor has the colour bands red, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 In the resistor colour code, which number does brown stand for?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 970 Ω resistor? (a) white-violet-black (b) violet-white-brown (c) white-violet-red (d) white-violet-brown
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86000 Ω resistor? (a) grey-blue-orange (b) grey-blue-yellow (c) blue-grey-orange (d) grey-blue-red
  23. 23.🌈 A resistor has the colour bands white, white, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands yellow, white, red. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) yellow-orange-orange (b) orange-black-red (c) orange-black-orange (d) orange-black-yellow
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) brown-black-black (b) red-black-black (c) red-brown-black (d) brown-black-brown
  28. 28.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands white, brown, brown. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands orange, grey, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 57 Ω resistor? (a) violet-green-black (b) green-violet-black (c) green-violet-brown (d) blue-violet-black
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9700 Ω resistor? (a) white-violet-brown (b) white-violet-red (c) violet-white-red (d) white-violet-orange
  33. 33.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands violet, red, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands white, blue, black. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands blue, orange, brown. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) orange-green-black (b) red-green-black (c) red-green-brown (d) green-red-black
  38. 38.🌈 A resistor has the colour bands brown, yellow, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands yellow, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands red, red, brown. What is its value (in ohms)?

Answer key

  1. 2200
  2. 250
  3. 34
  4. 8
  5. violet-orange-brown
  6. 7
  7. 3.6
  8. 5 %
  9. 20000
  10. 2
  11. 170
  12. 6
  13. 7700
  14. the one nearest an end
  15. 950
  16. 8400
  17. white-yellow-black
  18. orange-yellow-red
  19. 270
  20. 1
  21. white-violet-brown
  22. grey-blue-orange
  23. 990
  24. 4900
  25. 8.3
  26. orange-black-orange
  27. brown-black-black
  28. 230
  29. 910
  30. 3.8
  31. green-violet-black
  32. white-violet-red
  33. 89
  34. 72
  35. 96
  36. 630
  37. red-green-black
  38. 1.4
  39. 470
  40. 220

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