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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 66 · 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.

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  1. 1.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 73000 Ω resistor? (a) violet-orange-yellow (b) orange-violet-orange (c) violet-orange-red (d) violet-orange-orange
  2. 2.🌈 A resistor has the colour bands orange, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  3. 3.🌈 A resistor has the colour bands grey, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 810 Ω resistor? (a) brown-grey-brown (b) grey-brown-black (c) grey-brown-red (d) grey-brown-brown
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 25 % (b) 50 % (c) 5 % (d) 0 %
  6. 6.🌈 A resistor has the colour bands brown, blue, orange. What is its value in kilo-ohms (kΩ)? =
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) blue-red-black (b) green-red-brown (c) red-green-black (d) green-red-black
  8. 8.🌈 A resistor has the colour bands white, black, brown. What is its value (in ohms)?
  9. 9.🌈 A resistor has the colour bands blue, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 Which band is read first on a resistor? (a) any band (b) the widest gap (c) the one nearest an end (d) the gold band
  11. 11.🌈 A resistor has the colour bands yellow, brown, red. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands yellow, green, black. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 96 Ω resistor? (a) white-blue-brown (b) white-blue-black (c) brown-blue-black (d) blue-white-black
  14. 14.🌈 In the resistor colour code, which number does grey stand for?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38 Ω resistor? (a) orange-grey-black (b) orange-grey-brown (c) yellow-grey-black (d) grey-orange-black
  16. 16.🌈 A resistor has the colour bands red, red, yellow. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 A resistor has the colour bands yellow, red, brown. What is its value (in ohms)?
  18. 18.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5700 Ω resistor? (a) violet-green-red (b) green-violet-orange (c) green-violet-red (d) green-violet-brown
  19. 19.🌈 A resistor has the colour bands red, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 80000 Ω resistor? (a) white-grey-orange (b) grey-black-yellow (c) grey-black-orange (d) grey-black-red
  21. 21.🌈 A resistor has the colour bands grey, grey, brown. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 18000 Ω resistor? (a) brown-grey-orange (b) brown-grey-red (c) brown-grey-yellow (d) grey-brown-orange
  23. 23.🌈 A resistor has the colour bands blue, blue, brown. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands brown, brown, brown. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands blue, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands blue, red, black. What is its value (in ohms)?
  27. 27.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 94000 Ω resistor? (a) white-yellow-yellow (b) white-yellow-red (c) yellow-white-orange (d) white-yellow-orange
  28. 28.🌈 A resistor has the colour bands orange, white, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands orange, brown, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands yellow, black, orange. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does red stand for?
  32. 32.🌈 A resistor has the colour bands green, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands orange, grey, red. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands brown, orange, orange. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 37 Ω resistor? (a) yellow-violet-black (b) violet-orange-black (c) orange-violet-black (d) orange-violet-brown
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3500 Ω resistor? (a) green-orange-red (b) orange-green-orange (c) orange-green-red (d) orange-green-brown
  37. 37.🌈 A resistor has the colour bands brown, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 860 Ω resistor? (a) blue-grey-brown (b) grey-blue-black (c) grey-blue-red (d) grey-blue-brown
  39. 39.🌈 A resistor has the colour bands green, brown, yellow. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands white, yellow, red. What is its value (in ohms)?

Answer key

  1. violet-orange-orange
  2. 310
  3. 84
  4. grey-brown-brown
  5. 5 %
  6. 16
  7. green-red-black
  8. 900
  9. 640
  10. the one nearest an end
  11. 4100
  12. 45
  13. white-blue-black
  14. 8
  15. orange-grey-black
  16. 220
  17. 420
  18. green-violet-red
  19. 260
  20. grey-black-orange
  21. 880
  22. brown-grey-orange
  23. 660
  24. 110
  25. 630
  26. 62
  27. white-yellow-orange
  28. 3.9
  29. 31
  30. 40
  31. 2
  32. 580
  33. 3800
  34. 13
  35. orange-violet-black
  36. orange-green-red
  37. 130
  38. grey-blue-brown
  39. 510
  40. 9400

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