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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 421 · 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 brown, yellow, orange. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands red, green, orange. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  4. 4.🌈 A resistor has the colour bands white, green, red. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does black stand for?
  6. 6.🌈 In the resistor colour code, which number does white stand for?
  7. 7.🌈 A resistor has the colour bands brown, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 580 Ω resistor? (a) green-grey-black (b) green-grey-red (c) grey-green-brown (d) green-grey-brown
  9. 9.🌈 A resistor has the colour bands red, green, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 In the resistor colour code, which number does brown stand for?
  11. 11.🌈 A resistor has the colour bands white, red, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands white, green, black. What is its value (in ohms)?
  13. 13.🌈 Which band is read first on a resistor? (a) the widest gap (b) any band (c) the one nearest an end (d) the gold band
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 25 % (d) 0 %
  15. 15.🌈 A resistor has the colour bands blue, black, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 470 Ω resistor? (a) yellow-violet-red (b) yellow-violet-black (c) violet-yellow-brown (d) yellow-violet-brown
  17. 17.🌈 A resistor has the colour bands brown, brown, black. What is its value (in ohms)?
  18. 18.🌈 In the resistor colour code, which number does red stand for?
  19. 19.🌈 In the resistor colour code, which number does blue stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5500 Ω resistor? (a) green-green-red (b) green-green-orange (c) green-blue-red (d) green-green-brown
  21. 21.🌈 A resistor has the colour bands yellow, black, orange. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71000 Ω resistor? (a) violet-brown-yellow (b) brown-violet-orange (c) violet-brown-red (d) violet-brown-orange
  23. 23.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  24. 24.🌈 In the resistor colour code, which number does orange stand for?
  25. 25.🌈 A resistor has the colour bands brown, grey, brown. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands blue, blue, red. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands grey, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 16000 Ω resistor? (a) brown-blue-yellow (b) brown-blue-orange (c) brown-blue-red (d) blue-brown-orange
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) brown-grey-brown (b) grey-brown-brown (c) brown-grey-black (d) brown-grey-red
  30. 30.🌈 A resistor has the colour bands grey, brown, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands red, brown, red. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands white, green, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 560 Ω resistor? (a) green-blue-red (b) blue-green-brown (c) green-blue-brown (d) green-blue-black
  35. 35.🌈 A resistor has the colour bands brown, red, orange. What is its value (in ohms)?
  36. 36.🌈 In the resistor colour code, which number does violet stand for?
  37. 37.🌈 A resistor has the colour bands grey, white, orange. What is its value (in ohms)?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4300 Ω resistor? (a) yellow-orange-orange (b) yellow-orange-red (c) yellow-orange-brown (d) orange-yellow-red
  39. 39.🌈 A resistor has the colour bands grey, black, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands orange, red, orange. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 14000
  2. 25
  3. 81000
  4. 9500
  5. 0
  6. 9
  7. 180
  8. green-grey-brown
  9. 2.5
  10. 1
  11. 9200
  12. 95
  13. the one nearest an end
  14. 5 %
  15. 60
  16. yellow-violet-brown
  17. 11
  18. 2
  19. 6
  20. green-green-red
  21. 40000
  22. violet-brown-orange
  23. 360
  24. 3
  25. 180
  26. 6600
  27. 810
  28. brown-blue-orange
  29. brown-grey-brown
  30. 8.1
  31. 2.1
  32. 9.5
  33. 6
  34. green-blue-brown
  35. 12000
  36. 7
  37. 89000
  38. yellow-orange-red
  39. 80
  40. 32

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