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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 234 · 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, red. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 17000 Ω resistor? (a) brown-violet-red (b) violet-brown-orange (c) brown-violet-yellow (d) brown-violet-orange
  3. 3.🌈 A resistor has the colour bands violet, green, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9700 Ω resistor? (a) white-violet-orange (b) violet-white-red (c) white-violet-brown (d) white-violet-red
  6. 6.🌈 A resistor has the colour bands blue, white, red. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83 Ω resistor? (a) orange-grey-black (b) grey-orange-brown (c) grey-orange-black (d) white-orange-black
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9200 Ω resistor? (a) red-white-red (b) white-red-red (c) white-red-brown (d) white-red-orange
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23000 Ω resistor? (a) red-orange-red (b) orange-red-orange (c) red-orange-yellow (d) red-orange-orange
  10. 10.🌈 A resistor has the colour bands yellow, blue, orange. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does brown stand for?
  12. 12.🌈 A resistor has the colour bands red, grey, black. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) white-grey-black (b) grey-black-brown (c) grey-black-black (d) white-black-black
  14. 14.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the gold band (d) the one nearest an end
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 860 Ω resistor? (a) grey-blue-red (b) grey-blue-brown (c) blue-grey-brown (d) grey-blue-black
  16. 16.🌈 In the resistor colour code, which number does yellow stand for?
  17. 17.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  18. 18.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A gold fourth band on a resistor means the value may be off by … (a) 5 % (b) 50 % (c) 25 % (d) 0 %
  20. 20.🌈 In the resistor colour code, which number does blue stand for?
  21. 21.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5200 Ω resistor? (a) green-red-brown (b) green-red-red (c) red-green-red (d) green-red-orange
  23. 23.🌈 A resistor has the colour bands blue, orange, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands red, orange, orange. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands green, black, orange. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands blue, blue, brown. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands red, grey, orange. What is its value (in ohms)?
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3200 Ω resistor? (a) orange-red-red (b) orange-red-orange (c) orange-red-brown (d) red-orange-red
  29. 29.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  30. 30.🌈 In the resistor colour code, which number does black stand for?
  31. 31.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) brown-blue-orange (b) brown-blue-red (c) brown-blue-yellow (d) blue-brown-orange
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2700 Ω resistor? (a) red-violet-orange (b) red-violet-red (c) red-violet-brown (d) violet-red-red
  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 73000 Ω resistor? (a) violet-orange-red (b) violet-orange-yellow (c) orange-violet-orange (d) violet-orange-orange
  35. 35.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  37. 37.🌈 In the resistor colour code, which number does red stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) yellow-orange-black (b) orange-black-black (c) orange-black-brown (d) yellow-black-black
  39. 39.🌈 In the resistor colour code, which number does green stand for?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9300 Ω resistor? (a) white-orange-brown (b) white-orange-red (c) orange-white-red (d) white-orange-orange

Answer key

  1. 2900
  2. brown-violet-orange
  3. 750
  4. 16
  5. white-violet-red
  6. 6900
  7. grey-orange-black
  8. white-red-red
  9. red-orange-orange
  10. 46000
  11. 1
  12. 28
  13. grey-black-black
  14. the one nearest an end
  15. grey-blue-brown
  16. 4
  17. 110
  18. 8.1
  19. 5 %
  20. 6
  21. 10
  22. green-red-red
  23. 63000
  24. 23000
  25. 50
  26. 660
  27. 28000
  28. orange-red-red
  29. 12
  30. 0
  31. brown-blue-orange
  32. red-violet-red
  33. 3
  34. violet-orange-orange
  35. 490
  36. 360
  37. 2
  38. orange-black-black
  39. 5
  40. white-orange-red

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