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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 262 · 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 brown, green, red. What is its value in kilo-ohms (kΩ)? =
  2. 2.🌈 A resistor has the colour bands orange, green, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands red, yellow, brown. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does orange stand for?
  6. 6.🌈 In the resistor colour code, which number does white stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9000 Ω resistor? (a) white-black-orange (b) white-black-red (c) brown-white-red (d) white-black-brown
  8. 8.🌈 A resistor has the colour bands red, green, orange. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands white, grey, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands violet, white, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 In the resistor colour code, which number does violet stand for?
  12. 12.🌈 In the resistor colour code, which number does yellow stand for?
  13. 13.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) the widest gap (d) any band
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 0 % (d) 25 %
  15. 15.🌈 In the resistor colour code, which number does brown stand for?
  16. 16.🌈 A resistor has the colour bands violet, black, orange. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36000 Ω resistor? (a) blue-orange-orange (b) orange-blue-red (c) orange-blue-yellow (d) orange-blue-orange
  18. 18.🌈 A resistor has the colour bands blue, brown, red. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3900 Ω resistor? (a) orange-white-brown (b) orange-white-red (c) white-orange-red (d) orange-white-orange
  20. 20.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4500 Ω resistor? (a) yellow-green-red (b) yellow-green-orange (c) green-yellow-red (d) yellow-green-brown
  22. 22.🌈 A resistor has the colour bands brown, green, orange. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 39000 Ω resistor? (a) orange-white-orange (b) orange-white-red (c) orange-white-yellow (d) white-orange-orange
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) grey-green-brown (b) white-green-black (c) green-grey-black (d) grey-green-black
  25. 25.🌈 A resistor has the colour bands red, black, black. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands violet, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands violet, yellow, orange. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands red, red, black. What is its value (in ohms)?
  30. 30.🌈 In the resistor colour code, which number does blue stand for?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 930 Ω resistor? (a) white-orange-red (b) orange-white-brown (c) white-orange-brown (d) white-orange-black
  32. 32.🌈 A resistor has the colour bands blue, red, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands orange, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) red-brown-red (b) brown-red-red (c) brown-red-brown (d) brown-red-orange
  35. 35.🌈 A resistor has the colour bands violet, green, red. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99 Ω resistor? (a) white-white-brown (b) brown-white-black (c) white-black-black (d) white-white-black
  37. 37.🌈 A resistor has the colour bands white, brown, black. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 29 Ω resistor? (a) red-white-brown (b) orange-white-black (c) white-red-black (d) red-white-black
  39. 39.🌈 A resistor has the colour bands blue, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands white, yellow, brown. What is its value (in ohms)?

Answer key

  1. 1.5
  2. 35
  3. 9.1
  4. 240
  5. 3
  6. 9
  7. white-black-red
  8. 25000
  9. 9.8
  10. 79
  11. 7
  12. 4
  13. the one nearest an end
  14. 5 %
  15. 1
  16. 70000
  17. orange-blue-orange
  18. 6100
  19. orange-white-red
  20. 83000
  21. yellow-green-red
  22. 15000
  23. orange-white-orange
  24. grey-green-black
  25. 20
  26. 780
  27. 74000
  28. 38
  29. 22
  30. 6
  31. white-orange-brown
  32. 6.2
  33. 310
  34. brown-red-red
  35. 7500
  36. white-white-black
  37. 91
  38. red-white-black
  39. 640
  40. 940

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