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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 450 · 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 red, white, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 25 % (d) 5 %
  3. 3.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 550 Ω resistor? (a) green-green-black (b) green-green-red (c) green-blue-brown (d) green-green-brown
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83000 Ω resistor? (a) orange-grey-orange (b) grey-orange-red (c) grey-orange-yellow (d) grey-orange-orange
  6. 6.🌈 In the resistor colour code, which number does black stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) blue-black-black (b) green-black-brown (c) green-black-black (d) blue-green-black
  8. 8.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 Which band is read first on a resistor? (a) any band (b) the gold band (c) the one nearest an end (d) the widest gap
  10. 10.🌈 In the resistor colour code, which number does violet stand for?
  11. 11.🌈 A resistor has the colour bands green, white, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands blue, orange, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 95000 Ω resistor? (a) white-green-yellow (b) white-green-red (c) green-white-orange (d) white-green-orange
  14. 14.🌈 A resistor has the colour bands red, grey, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands grey, green, brown. What is its value (in ohms)?
  16. 16.🌈 A resistor has the colour bands orange, violet, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands red, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands grey, black, black. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands grey, red, black. What is its value (in ohms)?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 61000 Ω resistor? (a) brown-blue-orange (b) blue-brown-orange (c) blue-brown-red (d) blue-brown-yellow
  21. 21.🌈 A resistor has the colour bands grey, white, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96000 Ω resistor? (a) white-blue-orange (b) blue-white-orange (c) white-blue-yellow (d) white-blue-red
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 630 Ω resistor? (a) blue-orange-red (b) blue-orange-black (c) orange-blue-brown (d) blue-orange-brown
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 780 Ω resistor? (a) violet-grey-black (b) violet-grey-brown (c) violet-grey-red (d) grey-violet-brown
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 690 Ω resistor? (a) blue-white-red (b) blue-white-black (c) blue-white-brown (d) white-blue-brown
  27. 27.🌈 In the resistor colour code, which number does brown stand for?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 46 Ω resistor? (a) blue-yellow-black (b) yellow-blue-brown (c) yellow-blue-black (d) green-blue-black
  29. 29.🌈 A resistor has the colour bands red, violet, red. What is its value (in ohms)?
  30. 30.🌈 In the resistor colour code, which number does yellow stand for?
  31. 31.🌈 In the resistor colour code, which number does red stand for?
  32. 32.🌈 A resistor has the colour bands yellow, grey, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands white, red, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands violet, green, black. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 66000 Ω resistor? (a) blue-blue-yellow (b) blue-blue-red (c) blue-violet-orange (d) blue-blue-orange
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8400 Ω resistor? (a) yellow-grey-red (b) grey-yellow-red (c) grey-yellow-brown (d) grey-yellow-orange
  37. 37.🌈 A resistor has the colour bands red, brown, red. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands violet, grey, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands white, orange, red. What is its value (in ohms)?

Answer key

  1. 290
  2. 5 %
  3. 3.2
  4. green-green-brown
  5. grey-orange-orange
  6. 0
  7. green-black-black
  8. 4.1
  9. the one nearest an end
  10. 7
  11. 5900
  12. 63
  13. white-green-orange
  14. 2.8
  15. 850
  16. 3.7
  17. 260
  18. 80
  19. 82
  20. blue-brown-orange
  21. 89
  22. 12
  23. white-blue-orange
  24. blue-orange-brown
  25. violet-grey-brown
  26. blue-white-brown
  27. 1
  28. yellow-blue-black
  29. 2700
  30. 4
  31. 2
  32. 4800
  33. 92
  34. 75
  35. blue-blue-orange
  36. grey-yellow-red
  37. 2100
  38. 890
  39. 78
  40. 9300

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