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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 105 · 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 yellow, brown, orange. What is its value (in ohms)?
  2. 2.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1200 Ω resistor? (a) brown-red-brown (b) red-brown-red (c) brown-red-orange (d) brown-red-red
  3. 3.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 83 Ω resistor? (a) grey-orange-brown (b) white-orange-black (c) grey-orange-black (d) orange-grey-black
  5. 5.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 390 Ω resistor? (a) white-orange-brown (b) orange-white-black (c) orange-white-red (d) orange-white-brown
  6. 6.🌈 In the resistor colour code, which number does yellow stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 750 Ω resistor? (a) violet-green-red (b) violet-green-black (c) green-violet-brown (d) violet-green-brown
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 14000 Ω resistor? (a) brown-yellow-red (b) brown-yellow-orange (c) brown-yellow-yellow (d) yellow-brown-orange
  9. 9.🌈 In the resistor colour code, which number does grey stand for?
  10. 10.🌈 A resistor has the colour bands yellow, red, black. What is its value (in ohms)?
  11. 11.🌈 A resistor has the colour bands grey, red, orange. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 85 Ω resistor? (a) grey-green-brown (b) green-grey-black (c) white-green-black (d) grey-green-black
  13. 13.🌈 In the resistor colour code, which number does white stand for?
  14. 14.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36000 Ω resistor? (a) orange-blue-yellow (b) orange-blue-red (c) blue-orange-orange (d) orange-blue-orange
  16. 16.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the widest gap (d) the one nearest an end
  17. 17.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 230 Ω resistor? (a) red-orange-black (b) red-orange-brown (c) red-orange-red (d) orange-red-brown
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) green-grey-black (b) green-grey-brown (c) green-grey-red (d) grey-green-brown
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 46 Ω resistor? (a) blue-yellow-black (b) yellow-blue-brown (c) green-blue-black (d) yellow-blue-black
  21. 21.🌈 A resistor has the colour bands brown, orange, black. What is its value (in ohms)?
  22. 22.🌈 A resistor has the colour bands yellow, brown, red. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands orange, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands orange, black, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 75000 Ω resistor? (a) violet-green-orange (b) green-violet-orange (c) violet-green-yellow (d) violet-green-red
  26. 26.🌈 A resistor has the colour bands brown, black, black. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10 Ω resistor? (a) red-brown-black (b) red-black-black (c) brown-black-black (d) brown-black-brown
  28. 28.🌈 In the resistor colour code, which number does red stand for?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 900 Ω resistor? (a) white-black-red (b) white-black-black (c) white-black-brown (d) brown-white-brown
  30. 30.🌈 In the resistor colour code, which number does black stand for?
  31. 31.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 In the resistor colour code, which number does orange stand for?
  33. 33.🌈 A resistor has the colour bands brown, black, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands violet, green, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands brown, yellow, brown. What is its value (in ohms)?
  36. 36.🌈 A resistor has the colour bands violet, yellow, brown. What is its value (in ohms)?
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19000 Ω resistor? (a) brown-white-red (b) brown-white-orange (c) white-brown-orange (d) brown-white-yellow
  38. 38.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands violet, red, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands brown, violet, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 41000
  2. brown-red-red
  3. 64000
  4. grey-orange-black
  5. orange-white-brown
  6. 4
  7. violet-green-brown
  8. brown-yellow-orange
  9. 8
  10. 42
  11. 82
  12. grey-green-black
  13. 9
  14. 1400
  15. orange-blue-orange
  16. the one nearest an end
  17. 5 %
  18. red-orange-brown
  19. green-grey-brown
  20. yellow-blue-black
  21. 13
  22. 4100
  23. 370
  24. 300
  25. violet-green-orange
  26. 10
  27. brown-black-black
  28. 2
  29. white-black-brown
  30. 0
  31. 8.5
  32. 3
  33. 10000
  34. 750
  35. 140
  36. 740
  37. brown-white-orange
  38. 8.3
  39. 72000
  40. 17

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