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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 426 · 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 blue, blue, red. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands brown, brown, red. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands yellow, red, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3600 Ω resistor? (a) orange-blue-red (b) orange-blue-orange (c) blue-orange-red (d) orange-blue-brown
  5. 5.🌈 In the resistor colour code, which number does violet stand for?
  6. 6.🌈 A resistor has the colour bands violet, black, red. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  8. 8.🌈 A resistor has the colour bands green, red, brown. What is its value (in ohms)?
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 5 % (c) 50 % (d) 0 %
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 19 Ω resistor? (a) white-brown-black (b) red-white-black (c) brown-white-black (d) brown-white-brown
  11. 11.🌈 A resistor has the colour bands red, white, black. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands grey, white, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands blue, red, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 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
  18. 18.🌈 A resistor has the colour bands blue, yellow, brown. What is its value (in ohms)?
  19. 19.🌈 In the resistor colour code, which number does brown stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3700 Ω resistor? (a) violet-orange-red (b) orange-violet-brown (c) orange-violet-orange (d) orange-violet-red
  21. 21.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) yellow-black-black (b) yellow-black-brown (c) green-yellow-black (d) green-black-black
  23. 23.🌈 A resistor has the colour bands brown, red, orange. What is its value in kilo-ohms (kΩ)? =
  24. 24.🌈 A resistor has the colour bands grey, green, yellow. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 8900 Ω resistor? (a) white-grey-red (b) grey-white-orange (c) grey-white-brown (d) grey-white-red
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 45 Ω resistor? (a) green-green-black (b) yellow-green-black (c) yellow-green-brown (d) green-yellow-black
  27. 27.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, blue, orange. What is its value (in ohms)?
  29. 29.🌈 A resistor has the colour bands brown, red, black. What is its value (in ohms)?
  30. 30.🌈 A resistor has the colour bands grey, white, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands blue, grey, red. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands white, grey, orange. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 200 Ω resistor? (a) red-black-red (b) red-black-brown (c) red-black-black (d) orange-red-brown
  34. 34.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands red, white, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 710 Ω resistor? (a) violet-brown-red (b) brown-violet-brown (c) violet-brown-black (d) violet-brown-brown
  37. 37.🌈 In the resistor colour code, which number does yellow stand for?
  38. 38.🌈 A resistor has the colour bands blue, red, brown. What is its value (in ohms)?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) red-grey-black (b) red-grey-brown (c) orange-grey-black (d) grey-red-black
  40. 40.🌈 In the resistor colour code, which number does black stand for?

Answer key

  1. 6600
  2. 1100
  3. 4.2
  4. orange-blue-red
  5. 7
  6. 7
  7. 9000
  8. 520
  9. 5 %
  10. brown-white-black
  11. 29
  12. 890
  13. 62000
  14. 570
  15. 3.2
  16. 99
  17. the one nearest an end
  18. 640
  19. 1
  20. orange-violet-red
  21. 520
  22. yellow-black-black
  23. 12
  24. 850
  25. grey-white-red
  26. yellow-green-black
  27. 71000
  28. 76000
  29. 12
  30. 89
  31. 6800
  32. 98
  33. red-black-brown
  34. 52
  35. 2.9
  36. violet-brown-brown
  37. 4
  38. 620
  39. red-grey-black
  40. 0

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