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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 52 · 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 gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 0 % (c) 50 % (d) 25 %
  2. 2.🌈 A resistor has the colour bands grey, violet, red. What is its value (in ohms)?
  3. 3.🌈 In the resistor colour code, which number does black stand for?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) violet-orange-red (b) violet-orange-yellow (c) violet-orange-orange (d) orange-violet-orange
  5. 5.🌈 In the resistor colour code, which number does violet stand for?
  6. 6.🌈 A resistor has the colour bands yellow, brown, red. What is its value (in ohms)?
  7. 7.🌈 In the resistor colour code, which number does green stand for?
  8. 8.🌈 A resistor has the colour bands orange, orange, black. What is its value (in ohms)?
  9. 9.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) any band (c) the widest gap (d) the gold band
  10. 10.🌈 A resistor has the colour bands brown, grey, black. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does white stand for?
  12. 12.🌈 A resistor has the colour bands yellow, grey, 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 green, violet, orange. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands white, orange, black. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands green, yellow, brown. 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 brown stand for?
  21. 21.🌈 A resistor has the colour bands orange, green, black. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does yellow stand for?
  23. 23.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76 Ω resistor? (a) blue-violet-black (b) violet-blue-brown (c) grey-blue-black (d) violet-blue-black
  25. 25.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) orange-yellow-orange (b) orange-yellow-red (c) orange-yellow-brown (d) yellow-orange-red
  28. 28.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands brown, brown, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 820 Ω resistor? (a) red-grey-brown (b) grey-red-black (c) grey-red-brown (d) grey-red-red
  32. 32.🌈 A resistor has the colour bands green, violet, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 550 Ω resistor? (a) green-green-red (b) green-blue-brown (c) green-green-black (d) green-green-brown
  34. 34.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 870 Ω resistor? (a) grey-violet-red (b) grey-violet-brown (c) grey-violet-black (d) violet-grey-brown
  36. 36.🌈 A resistor has the colour bands grey, red, brown. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 410 Ω resistor? (a) yellow-brown-brown (b) yellow-brown-black (c) yellow-brown-red (d) brown-yellow-brown
  38. 38.🌈 A resistor has the colour bands blue, brown, orange. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 670 Ω resistor? (a) blue-violet-red (b) blue-violet-black (c) violet-blue-brown (d) blue-violet-brown
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-brown (b) red-orange-black (c) red-orange-red (d) orange-red-brown

Answer key

  1. 5 %
  2. 8700
  3. 0
  4. violet-orange-orange
  5. 7
  6. 4100
  7. 5
  8. 33
  9. the one nearest an end
  10. 18
  11. 9
  12. 48000
  13. 2
  14. 57
  15. 6.1
  16. 39
  17. 93
  18. 540
  19. 170
  20. 1
  21. 35
  22. 4
  23. 9100
  24. violet-blue-black
  25. 5.4
  26. 2500
  27. orange-yellow-red
  28. 240
  29. 11
  30. 91
  31. grey-red-brown
  32. 5.7
  33. green-green-brown
  34. 920
  35. grey-violet-brown
  36. 820
  37. yellow-brown-brown
  38. 61000
  39. blue-violet-brown
  40. red-orange-brown

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