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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 192 · 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.🌈 In the resistor colour code, which number does brown stand for?
  2. 2.🌈 A resistor has the colour bands brown, yellow, black. What is its value (in ohms)?
  3. 3.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) any band (d) the widest gap
  4. 4.🌈 A resistor has the colour bands brown, red, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 A resistor has the colour bands white, grey, orange. What is its value in kilo-ohms (kΩ)? =
  6. 6.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 84 Ω resistor? (a) white-yellow-black (b) grey-yellow-brown (c) grey-yellow-black (d) yellow-grey-black
  7. 7.🌈 A resistor has the colour bands green, violet, yellow. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 A resistor has the colour bands green, black, brown. What is its value (in ohms)?
  9. 9.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 98 Ω resistor? (a) white-grey-black (b) brown-grey-black (c) white-grey-brown (d) grey-white-black
  10. 10.🌈 A resistor has the colour bands red, blue, orange. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 1100 Ω resistor? (a) brown-red-red (b) brown-brown-red (c) brown-brown-brown (d) brown-brown-orange
  12. 12.🌈 In the resistor colour code, which number does yellow stand for?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 10000 Ω resistor? (a) brown-black-yellow (b) brown-black-orange (c) brown-black-red (d) red-brown-orange
  14. 14.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 0 % (c) 25 % (d) 5 %
  15. 15.🌈 A resistor has the colour bands violet, yellow, red. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 A resistor has the colour bands white, yellow, orange. What is its value (in ohms)?
  17. 17.🌈 A resistor has the colour bands blue, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  18. 18.🌈 A resistor has the colour bands grey, grey, orange. What is its value (in ohms)?
  19. 19.🌈 A resistor has the colour bands orange, yellow, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
  21. 21.🌈 In the resistor colour code, which number does grey stand for?
  22. 22.🌈 A resistor has the colour bands orange, black, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 13000 Ω resistor? (a) brown-orange-yellow (b) brown-orange-orange (c) orange-brown-orange (d) brown-orange-red
  25. 25.🌈 In the resistor colour code, which number does green stand for?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 21000 Ω resistor? (a) red-brown-orange (b) brown-red-orange (c) red-brown-yellow (d) red-brown-red
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 88000 Ω resistor? (a) grey-white-orange (b) grey-grey-orange (c) grey-grey-red (d) grey-grey-yellow
  28. 28.🌈 In the resistor colour code, which number does red stand for?
  29. 29.🌈 In the resistor colour code, which number does black stand for?
  30. 30.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 A resistor has the colour bands grey, violet, orange. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands grey, green, orange. What is its value (in ohms)?
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 4800 Ω resistor? (a) yellow-grey-orange (b) yellow-grey-brown (c) grey-yellow-red (d) yellow-grey-red
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) orange-yellow-orange (b) orange-yellow-red (c) orange-yellow-brown (d) yellow-orange-red
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 25 Ω resistor? (a) red-green-brown (b) orange-green-black (c) green-red-black (d) red-green-black
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28 Ω resistor? (a) grey-red-black (b) red-grey-brown (c) red-grey-black (d) orange-grey-black
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 26000 Ω resistor? (a) blue-red-orange (b) red-blue-yellow (c) red-blue-red (d) red-blue-orange
  38. 38.🌈 A resistor has the colour bands grey, orange, orange. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands orange, violet, black. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, yellow, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 1
  2. 14
  3. the one nearest an end
  4. 120
  5. 98
  6. grey-yellow-black
  7. 570
  8. 500
  9. white-grey-black
  10. 26
  11. brown-brown-red
  12. 4
  13. brown-black-orange
  14. 5 %
  15. 7.4
  16. 94000
  17. 64
  18. 88000
  19. 34
  20. 45000
  21. 8
  22. 30000
  23. 81000
  24. brown-orange-orange
  25. 5
  26. red-brown-orange
  27. grey-grey-orange
  28. 2
  29. 0
  30. 6.5
  31. 87000
  32. 85000
  33. yellow-grey-red
  34. orange-yellow-red
  35. red-green-black
  36. red-grey-black
  37. red-blue-orange
  38. 83
  39. 37
  40. 2.4

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