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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 669 · 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 green, blue, red. What is its value (in ohms)?
  2. 2.🌈 Which band is read first on a resistor? (a) the gold band (b) the widest gap (c) any band (d) the one nearest an end
  3. 3.🌈 A resistor has the colour bands blue, yellow, red. What is its value (in ohms)?
  4. 4.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 920 Ω resistor? (a) white-red-red (b) white-red-brown (c) white-red-black (d) red-white-brown
  5. 5.🌈 A resistor has the colour bands blue, brown, brown. What is its value (in ohms)?
  6. 6.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 0 % (d) 5 %
  7. 7.🌈 A resistor has the colour bands red, white, red. What is its value in kilo-ohms (kΩ)? =
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 180 Ω resistor? (a) brown-grey-black (b) brown-grey-brown (c) grey-brown-brown (d) brown-grey-red
  9. 9.🌈 A resistor has the colour bands blue, violet, red. What is its value (in ohms)?
  10. 10.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 41 Ω resistor? (a) brown-yellow-black (b) yellow-brown-brown (c) green-brown-black (d) yellow-brown-black
  11. 11.🌈 A resistor has the colour bands brown, yellow, orange. What is its value (in ohms)?
  12. 12.🌈 A resistor has the colour bands green, red, black. What is its value (in ohms)?
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9000 Ω resistor? (a) white-black-brown (b) white-black-red (c) brown-white-red (d) white-black-orange
  14. 14.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 36000 Ω resistor? (a) blue-orange-orange (b) orange-blue-yellow (c) orange-blue-red (d) orange-blue-orange
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 5200 Ω resistor? (a) green-red-orange (b) red-green-red (c) green-red-red (d) green-red-brown
  16. 16.🌈 A resistor has the colour bands white, brown, red. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 20 Ω resistor? (a) orange-black-black (b) red-black-brown (c) red-black-black (d) orange-red-black
  18. 18.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
  19. 19.🌈 In the resistor colour code, which number does orange stand for?
  20. 20.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 220 Ω resistor? (a) red-orange-brown (b) red-red-red (c) red-red-black (d) red-red-brown
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 28000 Ω resistor? (a) grey-red-orange (b) red-grey-red (c) red-grey-orange (d) red-grey-yellow
  22. 22.🌈 In the resistor colour code, which number does violet stand for?
  23. 23.🌈 In the resistor colour code, which number does black stand for?
  24. 24.🌈 A resistor has the colour bands yellow, yellow, red. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands violet, violet, black. What is its value (in ohms)?
  26. 26.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30 Ω resistor? (a) yellow-black-black (b) yellow-orange-black (c) orange-black-black (d) orange-black-brown
  27. 27.🌈 A resistor has the colour bands yellow, green, orange. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands violet, blue, brown. What is its value (in ohms)?
  29. 29.🌈 In the resistor colour code, which number does red stand for?
  30. 30.🌈 A resistor has the colour bands violet, violet, orange. What is its value (in ohms)?
  31. 31.🌈 A resistor has the colour bands orange, orange, yellow. What is its value in kilo-ohms (kΩ)? =
  32. 32.🌈 A resistor has the colour bands blue, brown, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 A resistor has the colour bands orange, yellow, orange. What is its value (in ohms)?
  34. 34.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 30000 Ω resistor? (a) yellow-orange-orange (b) orange-black-orange (c) orange-black-red (d) orange-black-yellow
  35. 35.🌈 A resistor has the colour bands blue, black, red. What is its value in kilo-ohms (kΩ)? =
  36. 36.🌈 A resistor has the colour bands violet, red, brown. What is its value (in ohms)?
  37. 37.🌈 A resistor has the colour bands grey, violet, black. What is its value (in ohms)?
  38. 38.🌈 A resistor has the colour bands grey, white, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  40. 40.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) blue-red-red (b) blue-red-black (c) blue-red-brown (d) red-blue-brown

Answer key

  1. 5600
  2. the one nearest an end
  3. 6400
  4. white-red-brown
  5. 610
  6. 5 %
  7. 2.9
  8. brown-grey-brown
  9. 6700
  10. yellow-brown-black
  11. 14000
  12. 52
  13. white-black-red
  14. orange-blue-orange
  15. green-red-red
  16. 9.1
  17. red-black-black
  18. 5.2
  19. 3
  20. red-red-brown
  21. red-grey-orange
  22. 7
  23. 0
  24. 4400
  25. 77
  26. orange-black-black
  27. 45000
  28. 760
  29. 2
  30. 77000
  31. 330
  32. 6.1
  33. 34000
  34. orange-black-orange
  35. 6
  36. 720
  37. 87
  38. 8.9
  39. 24000
  40. blue-red-brown

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