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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 13 · 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 red, yellow, brown. What is its value (in ohms)?
  2. 2.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  3. 3.🌈 In the resistor colour code, which number does brown stand for?
  4. 4.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 In the resistor colour code, which number does white stand for?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 64 Ω resistor? (a) yellow-blue-black (b) violet-yellow-black (c) blue-yellow-black (d) blue-yellow-brown
  8. 8.🌈 In the resistor colour code, which number does violet stand for?
  9. 9.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands brown, grey, red. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does blue stand for?
  12. 12.🌈 A resistor has the colour bands violet, black, red. What is its value (in ohms)?
  13. 13.🌈 In the resistor colour code, which number does yellow stand for?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 43 Ω resistor? (a) yellow-orange-black (b) orange-yellow-black (c) yellow-orange-brown (d) green-orange-black
  15. 15.🌈 In the resistor colour code, which number does red stand for?
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8600 Ω resistor? (a) blue-grey-red (b) grey-blue-orange (c) grey-blue-brown (d) grey-blue-red
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 51 Ω resistor? (a) green-brown-black (b) green-brown-brown (c) blue-brown-black (d) brown-green-black
  18. 18.🌈 A resistor has the colour bands orange, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2800 Ω resistor? (a) red-grey-orange (b) red-grey-red (c) grey-red-red (d) red-grey-brown
  20. 20.🌈 A resistor has the colour bands grey, white, brown. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) yellow-orange-red (b) yellow-orange-brown (c) orange-yellow-brown (d) yellow-orange-black
  22. 22.🌈 A resistor has the colour bands red, white, brown. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands violet, black, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98000 Ω resistor? (a) grey-white-orange (b) white-grey-orange (c) white-grey-red (d) white-grey-yellow
  26. 26.🌈 In the resistor colour code, which number does green stand for?
  27. 27.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands green, red, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 In the resistor colour code, which number does orange stand for?
  31. 31.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands grey, grey, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands red, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 A resistor has the colour bands green, green, red. What is its value (in ohms)?
  35. 35.🌈 In the resistor colour code, which number does grey stand for?
  36. 36.🌈 A resistor has the colour bands grey, blue, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands green, blue, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?

Answer key

  1. 240
  2. the one nearest an end
  3. 1
  4. 12
  5. 9
  6. 5 %
  7. blue-yellow-black
  8. 7
  9. 300
  10. 1.8
  11. 6
  12. 7000
  13. 4
  14. yellow-orange-black
  15. 2
  16. grey-blue-red
  17. green-brown-black
  18. 340
  19. red-grey-red
  20. 890
  21. yellow-orange-brown
  22. 290
  23. 70
  24. 81
  25. white-grey-orange
  26. 5
  27. 110
  28. 5200
  29. 1.1
  30. 3
  31. 500
  32. 88
  33. 210
  34. 5500
  35. 8
  36. 86
  37. 56
  38. 690
  39. 84
  40. 24000

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