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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 920 · 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.🌈 A resistor has the colour bands blue, yellow, black. What is its value (in ohms)?
  2. 2.🌈 In the resistor colour code, which number does brown stand for?
  3. 3.🌈 A resistor has the colour bands green, white, red. What is its value in kilo-ohms (kΩ)? =
  4. 4.🌈 A resistor has the colour bands violet, brown, orange. What is its value (in ohms)?
  5. 5.🌈 A resistor has the colour bands red, white, orange. What is its value (in ohms)?
  6. 6.🌈 In the resistor colour code, which number does blue stand for?
  7. 7.🌈 Which band is read first on a resistor? (a) the widest gap (b) the one nearest an end (c) any band (d) the gold band
  8. 8.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3300 Ω resistor? (a) orange-orange-brown (b) orange-yellow-red (c) orange-orange-red (d) orange-orange-orange
  9. 9.🌈 A gold fourth band on a resistor means the value may be off by … (a) 0 % (b) 50 % (c) 5 % (d) 25 %
  10. 10.🌈 In the resistor colour code, which number does yellow stand for?
  11. 11.🌈 A resistor has the colour bands yellow, orange, red. What is its value in kilo-ohms (kΩ)? =
  12. 12.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 22 Ω resistor? (a) red-orange-black (b) red-red-brown (c) red-red-black (d) orange-red-black
  13. 13.🌈 A resistor has the colour bands blue, yellow, orange. What is its value (in ohms)?
  14. 14.🌈 A resistor has the colour bands green, red, red. What is its value in kilo-ohms (kΩ)? =
  15. 15.🌈 In the resistor colour code, which number does red stand for?
  16. 16.🌈 A resistor has the colour bands orange, orange, orange. What is its value in kilo-ohms (kΩ)? =
  17. 17.🌈 In the resistor colour code, which number does white stand for?
  18. 18.🌈 A resistor has the colour bands violet, brown, red. What is its value (in ohms)?
  19. 19.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2100 Ω resistor? (a) red-brown-red (b) red-brown-orange (c) red-brown-brown (d) brown-red-red
  20. 20.🌈 A resistor has the colour bands orange, red, orange. What is its value (in ohms)?
  21. 21.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 690 Ω resistor? (a) white-blue-brown (b) blue-white-black (c) blue-white-red (d) blue-white-brown
  22. 22.🌈 A resistor has the colour bands grey, blue, red. What is its value in kilo-ohms (kΩ)? =
  23. 23.🌈 A resistor has the colour bands brown, orange, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands white, brown, red. What is its value (in ohms)?
  25. 25.🌈 A resistor has the colour bands orange, brown, brown. What is its value (in ohms)?
  26. 26.🌈 In the resistor colour code, which number does grey stand for?
  27. 27.🌈 A resistor has the colour bands brown, red, 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 orange stand for?
  30. 30.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 48000 Ω resistor? (a) yellow-grey-yellow (b) yellow-grey-red (c) grey-yellow-orange (d) yellow-grey-orange
  31. 31.🌈 A resistor has the colour bands green, blue, black. What is its value (in ohms)?
  32. 32.🌈 A resistor has the colour bands brown, blue, red. What is its value in kilo-ohms (kΩ)? =
  33. 33.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 9900 Ω resistor? (a) white-white-orange (b) white-white-brown (c) white-black-red (d) white-white-red
  34. 34.🌈 A resistor has the colour bands blue, red, yellow. What is its value in kilo-ohms (kΩ)? =
  35. 35.🌈 A resistor has the colour bands grey, orange, orange. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 620 Ω resistor? (a) blue-red-brown (b) red-blue-brown (c) blue-red-black (d) blue-red-red
  37. 37.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 270 Ω resistor? (a) red-violet-brown (b) red-violet-black (c) red-violet-red (d) violet-red-brown
  38. 38.🌈 In the resistor colour code, which number does green stand for?
  39. 39.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 550 Ω resistor? (a) green-green-brown (b) green-blue-brown (c) green-green-red (d) green-green-black
  40. 40.🌈 A resistor has the colour bands green, violet, red. What is its value (in ohms)?

Answer key

  1. 64
  2. 1
  3. 5.9
  4. 71000
  5. 29000
  6. 6
  7. the one nearest an end
  8. orange-orange-red
  9. 5 %
  10. 4
  11. 4.3
  12. red-red-black
  13. 64000
  14. 5.2
  15. 2
  16. 33
  17. 9
  18. 7100
  19. red-brown-red
  20. 32000
  21. blue-white-brown
  22. 8.6
  23. 13000
  24. 9100
  25. 310
  26. 8
  27. 12000
  28. 760
  29. 3
  30. yellow-grey-orange
  31. 56
  32. 1.6
  33. white-white-red
  34. 620
  35. 83000
  36. blue-red-brown
  37. red-violet-brown
  38. 5
  39. green-green-brown
  40. 5700

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