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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 717 · 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.

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  1. 1.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) yellow-orange-brown (b) orange-yellow-brown (c) yellow-orange-red (d) yellow-orange-black
  4. 4.🌈 A resistor has the colour bands yellow, red, orange. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands orange, violet, brown. What is its value (in ohms)?
  6. 6.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 25 % (c) 50 % (d) 0 %
  8. 8.🌈 A resistor has the colour bands white, white, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands red, red, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 A resistor has the colour bands blue, white, red. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands orange, green, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands violet, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  17. 17.🌈 In the resistor colour code, which number does white stand for?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12000 Ω resistor? (a) brown-red-orange (b) brown-red-red (c) red-brown-orange (d) brown-red-yellow
  19. 19.🌈 In the resistor colour code, which number does green stand for?
  20. 20.🌈 A resistor has the colour bands green, grey, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-orange-black (b) red-red-black (c) orange-red-black (d) red-red-brown
  22. 22.🌈 A resistor has the colour bands brown, orange, orange. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 69000 Ω resistor? (a) white-blue-orange (b) blue-white-yellow (c) blue-white-red (d) blue-white-orange
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72 Ω resistor? (a) grey-red-black (b) violet-red-brown (c) violet-red-black (d) red-violet-black
  25. 25.🌈 A resistor has the colour bands yellow, grey, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) blue-brown-orange (b) blue-brown-red (c) blue-brown-yellow (d) brown-blue-orange
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) white-grey-black (b) brown-grey-black (c) white-grey-brown (d) grey-white-black
  28. 28.🌈 A resistor has the colour bands red, red, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5700 Ω resistor? (a) green-violet-brown (b) green-violet-orange (c) violet-green-red (d) green-violet-red
  31. 31.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 62 Ω resistor? (a) blue-red-black (b) blue-red-brown (c) violet-red-black (d) red-blue-black
  34. 34.🌈 A resistor has the colour bands white, white, red. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 470 Ω resistor? (a) yellow-violet-red (b) yellow-violet-brown (c) yellow-violet-black (d) violet-yellow-brown
  36. 36.🌈 A resistor has the colour bands grey, orange, red. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 740 Ω resistor? (a) violet-yellow-brown (b) violet-yellow-black (c) violet-yellow-red (d) yellow-violet-brown
  38. 38.🌈 In the resistor colour code, which number does black stand for?
  39. 39.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 81000 Ω resistor? (a) brown-grey-orange (b) grey-brown-yellow (c) grey-brown-red (d) grey-brown-orange

Answer key

  1. 81
  2. 510
  3. yellow-orange-brown
  4. 42000
  5. 370
  6. 23000
  7. 5 %
  8. 990
  9. 2.2
  10. 620
  11. 79
  12. 6.9
  13. 180
  14. 350
  15. 730
  16. 29
  17. 9
  18. brown-red-orange
  19. 5
  20. 58
  21. red-red-black
  22. 13000
  23. blue-white-orange
  24. violet-red-black
  25. 4.8
  26. blue-brown-orange
  27. white-grey-black
  28. 2200
  29. 8.3
  30. green-violet-red
  31. 54000
  32. 86
  33. blue-red-black
  34. 9900
  35. yellow-violet-brown
  36. 8300
  37. violet-yellow-brown
  38. 0
  39. 88
  40. grey-brown-orange

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