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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 305 · 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, white, yellow. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) any band (d) the widest gap
  3. 3.🌈 A resistor has the colour bands brown, orange, orange. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 290 Ω resistor? (a) red-white-brown (b) red-white-red (c) red-white-black (d) white-red-brown
  6. 6.🌈 A resistor has the colour bands blue, white, orange. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-brown-black (b) brown-brown-brown (c) brown-brown-red (d) brown-red-brown
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 72000 Ω resistor? (a) violet-red-orange (b) violet-red-red (c) violet-red-yellow (d) red-violet-orange
  9. 9.🌈 A resistor has the colour bands blue, white, brown. What is its value (in ohms)?
  10. 10.🌈 A resistor has the colour bands white, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3000 Ω resistor? (a) orange-black-orange (b) orange-black-red (c) yellow-orange-red (d) orange-black-brown
  12. 12.🌈 In the resistor colour code, which number does black stand for?
  13. 13.🌈 A resistor has the colour bands brown, grey, orange. What is its value in kilo-ohms (kΩ)? =
  14. 14.🌈 In the resistor colour code, which number does red stand for?
  15. 15.🌈 In the resistor colour code, which number does grey stand for?
  16. 16.🌈 A resistor has the colour bands yellow, black, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands white, blue, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 0 % (c) 5 % (d) 50 %
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 990 Ω resistor? (a) white-white-black (b) white-white-brown (c) white-black-brown (d) white-white-red
  20. 20.🌈 A resistor has the colour bands green, violet, black. What is its value (in ohms)?
  21. 21.🌈 A resistor has the colour bands orange, white, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands green, green, yellow. 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-yellow (b) green-red-orange (c) red-green-red (d) red-green-orange
  24. 24.🌈 A resistor has the colour bands yellow, orange, brown. What is its value (in ohms)?
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 63000 Ω resistor? (a) blue-orange-yellow (b) blue-orange-orange (c) orange-blue-orange (d) blue-orange-red
  26. 26.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9800 Ω resistor? (a) white-grey-brown (b) white-grey-red (c) grey-white-red (d) white-grey-orange
  28. 28.🌈 A resistor has the colour bands yellow, black, red. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands yellow, orange, orange. What is its value (in ohms)?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9000 Ω resistor? (a) white-black-orange (b) brown-white-red (c) white-black-brown (d) white-black-red
  31. 31.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands red, violet, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 In the resistor colour code, which number does orange stand for?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 92000 Ω resistor? (a) white-red-red (b) red-white-orange (c) white-red-yellow (d) white-red-orange
  35. 35.🌈 A resistor has the colour bands orange, green, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands violet, brown, red. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands violet, grey, black. What is its value (in ohms)?
  39. 39.🌈 A resistor has the colour bands violet, green, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands grey, yellow, black. What is its value (in ohms)?

Answer key

  1. 990
  2. the one nearest an end
  3. 13000
  4. 4700
  5. red-white-brown
  6. 69000
  7. brown-brown-brown
  8. violet-red-orange
  9. 690
  10. 94
  11. orange-black-red
  12. 0
  13. 18
  14. 2
  15. 8
  16. 40
  17. 96
  18. 5 %
  19. white-white-brown
  20. 57
  21. 39
  22. 550
  23. red-green-orange
  24. 430
  25. blue-orange-orange
  26. 25
  27. white-grey-red
  28. 4000
  29. 43000
  30. white-black-red
  31. 890
  32. 2.7
  33. 3
  34. white-red-orange
  35. 3.5
  36. 16
  37. 7.1
  38. 78
  39. 750
  40. 84

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