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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 148 · 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 red, green, orange. What is its value (in ohms)?
  2. 2.🌈 Which band is read first on a resistor? (a) the gold band (b) any band (c) the one nearest an end (d) the widest gap
  3. 3.🌈 A resistor has the colour bands brown, black, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands white, yellow, red. What is its value (in ohms)?
  5. 5.🌈 In the resistor colour code, which number does white stand for?
  6. 6.🌈 In the resistor colour code, which number does orange stand for?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 76000 Ω resistor? (a) violet-blue-orange (b) violet-blue-yellow (c) violet-blue-red (d) blue-violet-orange
  8. 8.🌈 A resistor has the colour bands white, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 In the resistor colour code, which number does green stand for?
  10. 10.🌈 A resistor has the colour bands yellow, violet, black. What is its value (in ohms)?
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 99000 Ω resistor? (a) white-white-red (b) white-white-orange (c) white-white-yellow (d) white-black-orange
  12. 12.🌈 A resistor has the colour bands blue, blue, black. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-orange-orange (b) orange-orange-red (c) orange-orange-brown (d) orange-yellow-red
  14. 14.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4900 Ω resistor? (a) yellow-white-red (b) yellow-white-orange (c) yellow-white-brown (d) white-yellow-red
  16. 16.🌈 In the resistor colour code, which number does blue stand for?
  17. 17.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 25 % (c) 5 % (d) 50 %
  18. 18.🌈 A resistor has the colour bands red, black, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 510 Ω resistor? (a) green-brown-red (b) brown-green-brown (c) green-brown-brown (d) green-brown-black
  21. 21.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands green, brown, brown. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 110 Ω resistor? (a) brown-brown-black (b) brown-brown-red (c) brown-brown-brown (d) brown-red-brown
  24. 24.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands red, brown, orange. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) red-green-black (b) orange-green-black (c) red-green-brown (d) green-red-black
  27. 27.🌈 A resistor has the colour bands grey, orange, red. What is its value in kilo-ohms (kΩ)? =
  28. 28.🌈 A resistor has the colour bands white, blue, red. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 55 Ω resistor? (a) blue-green-black (b) green-green-brown (c) green-green-black (d) green-blue-black
  30. 30.🌈 A resistor has the colour bands orange, black, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands white, red, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands violet, yellow, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands grey, brown, orange. What is its value in kilo-ohms (kΩ)? =
  34. 34.🌈 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
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) green-red-black (b) green-red-brown (c) red-green-black (d) blue-red-black
  36. 36.🌈 A resistor has the colour bands brown, black, orange. What is its value in kilo-ohms (kΩ)? =
  37. 37.🌈 In the resistor colour code, which number does black stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 880 Ω resistor? (a) grey-grey-brown (b) grey-grey-black (c) grey-white-brown (d) grey-grey-red
  39. 39.🌈 A resistor has the colour bands orange, blue, black. What is its value (in ohms)?
  40. 40.🌈 In the resistor colour code, which number does brown stand for?

Answer key

  1. 25000
  2. the one nearest an end
  3. 1
  4. 9400
  5. 9
  6. 3
  7. violet-blue-orange
  8. 970
  9. 5
  10. 47
  11. white-white-orange
  12. 66
  13. orange-orange-red
  14. 6.7
  15. yellow-white-red
  16. 6
  17. 5 %
  18. 2
  19. 4.2
  20. green-brown-brown
  21. 29
  22. 510
  23. brown-brown-brown
  24. 9.1
  25. 21000
  26. red-green-black
  27. 8.3
  28. 9600
  29. green-green-black
  30. 30
  31. 92
  32. 7400
  33. 81
  34. brown-blue-orange
  35. green-red-black
  36. 10
  37. 0
  38. grey-grey-brown
  39. 36
  40. 1

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