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Electronics Worksheet: Resistor Colour Code

Electronics lesson 15: Resistor colour code · Set 745 · 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.🌈 In the resistor colour code, which number does yellow stand for?
  2. 2.🌈 Which band is read first on a resistor? (a) the gold band (b) the one nearest an end (c) any band (d) the widest gap
  3. 3.🌈 A resistor has the colour bands brown, blue, black. What is its value (in ohms)?
  4. 4.🌈 In the resistor colour code, which number does black stand for?
  5. 5.🌈 A gold fourth band on a resistor means the value may be off by … (a) 50 % (b) 25 % (c) 5 % (d) 0 %
  6. 6.🌈 A resistor has the colour bands violet, orange, black. What is its value (in ohms)?
  7. 7.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 340 Ω resistor? (a) orange-yellow-black (b) yellow-orange-brown (c) orange-yellow-red (d) orange-yellow-brown
  8. 8.🌈 A resistor has the colour bands violet, red, red. What is its value in kilo-ohms (kΩ)? =
  9. 9.🌈 A resistor has the colour bands green, black, yellow. What is its value in kilo-ohms (kΩ)? =
  10. 10.🌈 A resistor has the colour bands orange, yellow, red. What is its value (in ohms)?
  11. 11.🌈 In the resistor colour code, which number does grey stand for?
  12. 12.🌈 A resistor has the colour bands red, orange, orange. What is its value in kilo-ohms (kΩ)? =
  13. 13.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 3400 Ω resistor? (a) orange-yellow-brown (b) orange-yellow-red (c) orange-yellow-orange (d) yellow-orange-red
  14. 14.🌈 A resistor has the colour bands blue, grey, black. What is its value (in ohms)?
  15. 15.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 480 Ω resistor? (a) grey-yellow-brown (b) yellow-grey-red (c) yellow-grey-black (d) yellow-grey-brown
  16. 16.🌈 A resistor has the colour bands red, green, red. What is its value (in ohms)?
  17. 17.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 2300 Ω resistor? (a) orange-red-red (b) red-orange-orange (c) red-orange-red (d) red-orange-brown
  18. 18.🌈 In the resistor colour code, which number does red stand for?
  19. 19.🌈 A resistor has the colour bands red, white, orange. What is its value in kilo-ohms (kΩ)? =
  20. 20.🌈 In the resistor colour code, which number does blue stand for?
  21. 21.🌈 A resistor has the colour bands blue, violet, red. What is its value in kilo-ohms (kΩ)? =
  22. 22.🌈 A resistor has the colour bands blue, black, orange. What is its value (in ohms)?
  23. 23.🌈 A resistor has the colour bands red, yellow, orange. What is its value (in ohms)?
  24. 24.🌈 A resistor has the colour bands green, yellow, red. What is its value in kilo-ohms (kΩ)? =
  25. 25.🌈 A resistor has the colour bands grey, green, red. What is its value in kilo-ohms (kΩ)? =
  26. 26.🌈 A resistor has the colour bands green, red, yellow. What is its value in kilo-ohms (kΩ)? =
  27. 27.🌈 A resistor has the colour bands orange, blue, brown. What is its value (in ohms)?
  28. 28.🌈 A resistor has the colour bands red, red, orange. What is its value (in ohms)?
  29. 29.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 470 Ω resistor? (a) yellow-violet-brown (b) violet-yellow-brown (c) yellow-violet-red (d) yellow-violet-black
  30. 30.🌈 A resistor has the colour bands green, violet, red. What is its value in kilo-ohms (kΩ)? =
  31. 31.🌈 In the resistor colour code, which number does brown stand for?
  32. 32.🌈 A resistor has the colour bands red, yellow, red. What is its value (in ohms)?
  33. 33.🌈 A resistor has the colour bands green, orange, orange. What is its value (in ohms)?
  34. 34.🌈 A resistor has the colour bands yellow, violet, red. What is its value (in ohms)?
  35. 35.🌈 A resistor has the colour bands grey, green, black. What is its value (in ohms)?
  36. 36.🌈 Which colour bands (1st digit, 2nd digit, multiplier) mark a 93000 Ω resistor? (a) white-orange-orange (b) orange-white-orange (c) white-orange-red (d) white-orange-yellow
  37. 37.🌈 A resistor has the colour bands violet, yellow, yellow. What is its value in kilo-ohms (kΩ)? =
  38. 38.🌈 A resistor has the colour bands yellow, green, red. What is its value in kilo-ohms (kΩ)? =
  39. 39.🌈 A resistor has the colour bands yellow, red, orange. What is its value (in ohms)?
  40. 40.🌈 A resistor has the colour bands red, orange, brown. What is its value (in ohms)?

Answer key

  1. 4
  2. the one nearest an end
  3. 16
  4. 0
  5. 5 %
  6. 73
  7. orange-yellow-brown
  8. 7.2
  9. 500
  10. 3400
  11. 8
  12. 23
  13. orange-yellow-red
  14. 68
  15. yellow-grey-brown
  16. 2500
  17. red-orange-red
  18. 2
  19. 29
  20. 6
  21. 6.7
  22. 60000
  23. 24000
  24. 5.4
  25. 8.5
  26. 520
  27. 360
  28. 22000
  29. yellow-violet-brown
  30. 5.7
  31. 1
  32. 2400
  33. 53000
  34. 4700
  35. 85
  36. white-orange-orange
  37. 740
  38. 4.5
  39. 42000
  40. 230

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