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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 324 · 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.🌈 A resistor has the colour bands orange, red, black. What is its value (in ohms)?
  2. 2.🌈 A resistor has the colour bands blue, white, black. What is its value (in ohms)?
  3. 3.🌈 A resistor has the colour bands yellow, grey, yellow. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands red, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  5. 5.🌈 In the resistor colour code, which number does orange stand for?
  6. 6.🌈 Which band is read first on a resistor? (a) any band (b) the one nearest an end (c) the gold band (d) the widest gap
  7. 7.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 5 % (c) 0 % (d) 25 %
  8. 8.🌈 In the resistor colour code, which number does violet stand for?
  9. 9.🌈 A resistor has the colour bands white, black, red. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3100 Ω resistor? (a) orange-brown-brown (b) orange-brown-orange (c) brown-orange-red (d) orange-brown-red
  11. 11.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-black-black (b) orange-red-black (c) red-black-black (d) red-black-brown
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 38000 Ω resistor? (a) orange-grey-orange (b) grey-orange-orange (c) orange-grey-red (d) orange-grey-yellow
  13. 13.🌈 A resistor has the colour bands green, yellow, orange. What is its value (in ohms)?
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 760 Ω resistor? (a) blue-violet-brown (b) violet-blue-black (c) violet-blue-red (d) violet-blue-brown
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 35000 Ω resistor? (a) green-orange-orange (b) orange-green-orange (c) orange-green-yellow (d) orange-green-red
  16. 16.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark an 840 Ω resistor? (a) grey-yellow-red (b) yellow-grey-brown (c) grey-yellow-black (d) grey-yellow-brown
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 52 Ω resistor? (a) green-red-black (b) red-green-black (c) blue-red-black (d) green-red-brown
  18. 18.🌈 In the resistor colour code, which number does white stand for?
  19. 19.🌈 A resistor has the colour bands green, blue, yellow. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 A resistor has the colour bands orange, red, red. What is its value in kilo-ohms (kΩ)? =
  21. 21.🌈 A resistor has the colour bands grey, brown, black. What is its value (in ohms)?
  22. 22.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 300 Ω resistor? (a) yellow-orange-brown (b) orange-black-black (c) orange-black-brown (d) orange-black-red
  23. 23.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-orange-orange (b) orange-orange-red (c) orange-yellow-red (d) orange-orange-brown
  24. 24.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 15000 Ω resistor? (a) brown-green-yellow (b) brown-green-red (c) green-brown-orange (d) brown-green-orange
  25. 25.🌈 A resistor has the colour bands grey, red, red. What is its value (in ohms)?
  26. 26.🌈 In the resistor colour code, which number does green stand for?
  27. 27.🌈 A resistor has the colour bands red, blue, red. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands blue, green, red. What is its value in kilo-ohms (kΩ)? =
  29. 29.🌈 A resistor has the colour bands white, white, orange. What is its value in kilo-ohms (kΩ)? =
  30. 30.🌈 A resistor has the colour bands green, grey, red. What is its value (in ohms)?
  31. 31.🌈 In the resistor colour code, which number does brown stand for?
  32. 32.🌈 A resistor has the colour bands blue, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands yellow, brown, orange. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 77000 Ω resistor? (a) violet-grey-orange (b) violet-violet-red (c) violet-violet-orange (d) violet-violet-yellow
  35. 35.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 970 Ω resistor? (a) violet-white-brown (b) white-violet-brown (c) white-violet-red (d) white-violet-black
  36. 36.🌈 In the resistor colour code, which number does red stand for?
  37. 37.🌈 A resistor has the colour bands orange, grey, orange. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 In the resistor colour code, which number does yellow stand for?
  39. 39.🌈 A resistor has the colour bands brown, yellow, orange. What is its value in kilo-ohms (kΩ)? =
  40. 40.🌈 A resistor has the colour bands brown, brown, red. What is its value in kilo-ohms (kΩ)? =

Answer key

  1. 32
  2. 69
  3. 480
  4. 240
  5. 3
  6. the one nearest an end
  7. 5 %
  8. 7
  9. 9000
  10. orange-brown-red
  11. red-black-black
  12. orange-grey-orange
  13. 54000
  14. violet-blue-brown
  15. orange-green-orange
  16. grey-yellow-brown
  17. green-red-black
  18. 9
  19. 560
  20. 3.2
  21. 81
  22. orange-black-brown
  23. orange-orange-red
  24. brown-green-orange
  25. 8200
  26. 5
  27. 2600
  28. 6.5
  29. 99
  30. 5800
  31. 1
  32. 640
  33. 41000
  34. violet-violet-orange
  35. white-violet-brown
  36. 2
  37. 38
  38. 4
  39. 14
  40. 1.1

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