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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 883 · 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 white, violet, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands brown, violet, black. What is its value (in ohms)?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 82000 Ω resistor? (a) red-grey-orange (b) grey-red-orange (c) grey-red-yellow (d) grey-red-red
  4. 4.🌈 A resistor has the colour bands red, yellow, black. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does yellow stand for?
  6. 6.🌈 A resistor has the colour bands blue, orange, black. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands violet, brown, black. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands red, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 50 % (d) 5 %
  10. 10.🌈 In the resistor colour code, which number does brown stand for?
  11. 11.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the gold band (d) the widest gap
  12. 12.🌈 In the resistor colour code, which number does grey stand for?
  13. 13.🌈 In the resistor colour code, which number does black stand for?
  14. 14.🌈 A resistor has the colour bands orange, black, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) orange-black-brown (b) yellow-orange-black (c) yellow-black-black (d) orange-black-black
  16. 16.🌈 A resistor has the colour bands white, black, black. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands blue, grey, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 86 Ω resistor? (a) grey-blue-black (b) white-blue-black (c) blue-grey-black (d) grey-blue-brown
  20. 20.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  22. 22.🌈 In the resistor colour code, which number does violet stand for?
  23. 23.🌈 A resistor has the colour bands red, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands orange, white, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands violet, orange, orange. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 740 Ω resistor? (a) yellow-violet-brown (b) violet-yellow-red (c) violet-yellow-brown (d) violet-yellow-black
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4100 Ω resistor? (a) brown-yellow-red (b) yellow-brown-brown (c) yellow-brown-orange (d) yellow-brown-red
  28. 28.🌈 A resistor has the colour bands brown, green, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands orange, blue, red. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands green, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 44 Ω resistor? (a) yellow-green-black (b) green-yellow-black (c) yellow-yellow-black (d) yellow-yellow-brown
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) orange-violet-brown (b) yellow-violet-black (c) orange-violet-black (d) violet-orange-black
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99000 Ω resistor? (a) white-white-yellow (b) white-black-orange (c) white-white-orange (d) white-white-red
  34. 34.🌈 A resistor has the colour bands yellow, brown, black. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 33 Ω resistor? (a) orange-orange-black (b) yellow-orange-black (c) orange-yellow-black (d) orange-orange-brown
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) green-yellow-black (b) yellow-green-brown (c) yellow-green-black (d) green-green-black
  37. 37.🌈 A resistor has the colour bands grey, orange, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands green, green, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands grey, red, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 97000
  2. 17
  3. grey-red-orange
  4. 24
  5. 4
  6. 63
  7. 71
  8. 230
  9. 5 %
  10. 1
  11. the one nearest an end
  12. 8
  13. 0
  14. 3
  15. orange-black-black
  16. 90
  17. 2.2
  18. 6.8
  19. grey-blue-black
  20. 7.1
  21. 510
  22. 7
  23. 260
  24. 390
  25. 73000
  26. violet-yellow-brown
  27. yellow-brown-red
  28. 1500
  29. 3600
  30. 54
  31. yellow-yellow-black
  32. orange-violet-black
  33. white-white-orange
  34. 41
  35. orange-orange-black
  36. yellow-green-black
  37. 83
  38. 5.5
  39. 620
  40. 8.2

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