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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 80 · 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 white, orange, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 In the resistor colour code, which number does red stand for?
  3. 3.🌈 A resistor has the colour bands white, red, brown. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands brown, orange, brown. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98000 Ω resistor? (a) white-grey-orange (b) white-grey-red (c) white-grey-yellow (d) grey-white-orange
  6. 6.🌈 A resistor has the colour bands white, violet, brown. What is its value (in ohms)?
  7. 7.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which band is read first on a resistor? (a) the widest gap (b) the gold band (c) the one nearest an end (d) any band
  9. 9.🌈 In the resistor colour code, which number does green stand for?
  10. 10.🌈 A resistor has the colour bands blue, violet, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does yellow stand for?
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18 Ω resistor? (a) grey-brown-black (b) brown-grey-brown (c) brown-grey-black (d) red-grey-black
  13. 13.🌈 In the resistor colour code, which number does grey stand for?
  14. 14.🌈 In the resistor colour code, which number does brown stand for?
  15. 15.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) red-orange-black (b) orange-orange-black (c) orange-red-black (d) red-orange-brown
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-orange-black (b) red-red-brown (c) red-red-black (d) orange-red-black
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 710 Ω resistor? (a) violet-brown-black (b) brown-violet-brown (c) violet-brown-brown (d) violet-brown-red
  20. 20.🌈 A resistor has the colour bands violet, black, yellow. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25000 Ω resistor? (a) red-green-orange (b) red-green-red (c) green-red-orange (d) red-green-yellow
  24. 24.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  25. 25.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 50 % (d) 0 %
  26. 26.🌈 In the resistor colour code, which number does white stand for?
  27. 27.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands white, grey, black. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5700 Ω resistor? (a) violet-green-red (b) green-violet-orange (c) green-violet-red (d) green-violet-brown
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 53000 Ω resistor? (a) green-orange-yellow (b) green-orange-red (c) green-orange-orange (d) orange-green-orange
  32. 32.🌈 A resistor has the colour bands white, brown, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands red, white, red. What is its value (in ohms)?
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 12000 Ω resistor? (a) brown-red-orange (b) brown-red-red (c) brown-red-yellow (d) red-brown-orange
  36. 36.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55000 Ω resistor? (a) green-green-yellow (b) green-green-red (c) green-green-orange (d) green-blue-orange
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 65000 Ω resistor? (a) blue-green-yellow (b) green-blue-orange (c) blue-green-orange (d) blue-green-red
  40. 40.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?

Answer key

  1. 9.3
  2. 2
  3. 920
  4. 130
  5. white-grey-orange
  6. 970
  7. 9.8
  8. the one nearest an end
  9. 5
  10. 67
  11. 4
  12. brown-grey-black
  13. 8
  14. 1
  15. 1.6
  16. 9000
  17. red-orange-black
  18. red-red-black
  19. violet-brown-brown
  20. 700
  21. 3.9
  22. 2.7
  23. red-green-orange
  24. 78
  25. 5 %
  26. 9
  27. 1
  28. 81
  29. 98
  30. green-violet-red
  31. green-orange-orange
  32. 91
  33. 60
  34. 2900
  35. brown-red-orange
  36. 2.1
  37. 210
  38. green-green-orange
  39. blue-green-orange
  40. 85

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