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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 294 · 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.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 71 Ω resistor? (a) violet-brown-brown (b) violet-brown-black (c) brown-violet-black (d) grey-brown-black
  2. 2.🌈 In the resistor colour code, which number does green stand for?
  3. 3.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 40 Ω resistor? (a) yellow-black-black (b) green-black-black (c) green-yellow-black (d) yellow-black-brown
  4. 4.🌈 Which band is read first on a resistor? (a) the one nearest an end (b) the widest gap (c) the gold band (d) any band
  5. 5.🌈 A resistor has the colour bands green, red, brown. What is its value (in ohms)?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 0 % (d) 5 %
  7. 7.🌈 In the resistor colour code, which number does yellow stand for?
  8. 8.🌈 In the resistor colour code, which number does white stand for?
  9. 9.🌈 A resistor has the colour bands red, orange, red. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands blue, black, yellow. What is its value in kilo-ohms (kΩ)? =
  11. 11.🌈 A resistor has the colour bands white, violet, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands yellow, white, yellow. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 A resistor has the colour bands brown, violet, brown. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands yellow, brown, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 A resistor has the colour bands blue, white, orange. What is its value in kilo-ohms (kΩ)? =
  16. 16.🌈 In the resistor colour code, which number does grey stand for?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77000 Ω resistor? (a) violet-violet-red (b) violet-violet-yellow (c) violet-grey-orange (d) violet-violet-orange
  18. 18.🌈 A resistor has the colour bands green, orange, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 A resistor has the colour bands blue, violet, black. What is its value (in ohms)?
  20. 20.🌈 A resistor has the colour bands white, grey, orange. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 In the resistor colour code, which number does black stand for?
  22. 22.🌈 A resistor has the colour bands brown, yellow, red. What is its value (in ohms)?
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 56000 Ω resistor? (a) green-blue-orange (b) green-blue-red (c) blue-green-orange (d) green-blue-yellow
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80 Ω resistor? (a) grey-black-brown (b) grey-black-black (c) white-black-black (d) white-grey-black
  25. 25.🌈 A resistor has the colour bands white, grey, orange. What is its value (in ohms)?
  26. 26.🌈 A resistor has the colour bands brown, green, black. What is its value (in ohms)?
  27. 27.🌈 A resistor has the colour bands grey, brown, orange. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands red, black, orange. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 660 Ω resistor? (a) blue-violet-brown (b) blue-blue-brown (c) blue-blue-red (d) blue-blue-black
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) red-blue-brown (b) blue-red-red (c) blue-red-black (d) blue-red-brown
  31. 31.🌈 In the resistor colour code, which number does red stand for?
  32. 32.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35000 Ω resistor? (a) orange-green-red (b) orange-green-orange (c) orange-green-yellow (d) green-orange-orange
  33. 33.🌈 A resistor has the colour bands white, orange, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands red, violet, brown. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 89000 Ω resistor? (a) grey-white-orange (b) grey-white-yellow (c) white-grey-orange (d) grey-white-red
  37. 37.🌈 In the resistor colour code, which number does orange stand for?
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 50 Ω resistor? (a) green-black-black (b) blue-green-black (c) blue-black-black (d) green-black-brown
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 430 Ω resistor? (a) yellow-orange-brown (b) yellow-orange-black (c) orange-yellow-brown (d) yellow-orange-red
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 23 Ω resistor? (a) red-orange-brown (b) red-orange-black (c) orange-red-black (d) orange-orange-black

Answer key

  1. violet-brown-black
  2. 5
  3. yellow-black-black
  4. the one nearest an end
  5. 520
  6. 5 %
  7. 4
  8. 9
  9. 2.3
  10. 600
  11. 9700
  12. 490
  13. 170
  14. 4.1
  15. 69
  16. 8
  17. violet-violet-orange
  18. 5.3
  19. 67
  20. 98
  21. 0
  22. 1400
  23. green-blue-orange
  24. grey-black-black
  25. 98000
  26. 15
  27. 81000
  28. 20000
  29. blue-blue-brown
  30. blue-red-brown
  31. 2
  32. orange-green-orange
  33. 93000
  34. 1.6
  35. 270
  36. grey-white-orange
  37. 3
  38. green-black-black
  39. yellow-orange-brown
  40. red-orange-black

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